Information
-
Patent Grant
-
6557192
-
Patent Number
6,557,192
-
Date Filed
Tuesday, January 2, 200123 years ago
-
Date Issued
Tuesday, May 6, 200321 years ago
-
Inventors
-
Original Assignees
-
Examiners
- Shackelford; Heather
- Saldano; Lisa M.
Agents
-
CPC
-
US Classifications
Field of Search
US
- 005 413 R
- 005 413 AM
- 005 482
- 002 695
-
International Classifications
-
Abstract
A sleeping apparatus has an outer layer having an inner liner superimposed and coextensive with the outer layer and connected to each other, and an amusement feature provided on either the outer surface of the inner liner or the outer surface of the outer layer. A rigid pad can be positioned between the inner liner and the outer layer, or coupled to the outer surface of either the inner liner or the outer layer. As an alternative, the sleeping apparatus can have a panel having a foldable frame member having a folded and an unfolded orientation, with a fabric material covering portions of the frame member to form the panel when the frame member is in the unfolded orientation. This sleeping apparatus also includes a blanket portion coupled to the panel in a manner to define an internal sleeping space.
Description
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to sleeping or slumber bags, or related sleeping mats.
2. Description of the Prior Art
A conventional sleeping bag usually has an outer case and a co-extensive inner liner. The case and liner are secured together along their edges with the space between those layers filled with insulation or padding of one kind or another to form a pad. Usually, mating zipper slides are secured to the side and bottom edges of the pad so that when the pad is folded in half from side to side, a zipper slider may be pulled along the slides to form the sleeping bag which may be entered through the opening at the head of the bag.
Sleeping bags have become increasingly popular with children for home use, travel, and for overnight visits with friends and family. Manufacturers of children's sleeping bags have made use of familiar indicia, graphics, and designs, as well as toy and cartoon characters, which are printed on the outer case and inner liners of the sleeping bags to attract attention and to make the sleeping bag more endearing to children.
Despite the attempts to provide visual enhancements to conventional sleeping bags, there is still a need to provide additional fun and activity to sleeping bags.
SUMMARY OF THE DISCLOSURE
The present invention provides a sleeping apparatus that has an outer layer having an inner liner superimposed and coextensive with the outer layer and connected to each other, and an amusement feature provided on either the outer surface of the inner liner or the outer surface of the outer layer. A rigid pad can be positioned between the inner liner and the outer layer, or coupled to the outer surface of either the inner liner or the outer layer.
The present invention also provides, in another embodiment, a sleeping apparatus having a panel having a foldable frame member having a folded and an unfolded orientation, with a fabric material covering portions of the frame member to form the panel when the frame member is in the unfolded orientation. This sleeping apparatus also includes a blanket portion coupled to the panel in a manner to define an internal sleeping space.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1
is a perspective view of a sleeping bag according to one embodiment of the present invention.
FIG. 2
is a perspective view of the inner pad that is used with the sleeping bag of FIG.
1
.
FIG. 3
is perspective cutaway view of the sleeping bag of
FIG. 1
illustrating how the inner pad is fitted inside the sleeping bag.
FIGS. 4A-4D
,
5
,
6
and
7
are perspective views of sleeping bags according to different embodiments of the present invention.
FIGS. 8-9
illustrate different ways of electrically coupling the features of the sleeping bag of FIG.
8
.
FIG. 10
is a perspective view of a sleeping bag according to yet another embodiment of the present invention.
FIG. 11
is a partial cut-away view of the section A of the structure of
FIG. 10
illustrating a frame member retained within a sleeve.
FIGS. 12A through 12D
illustrate how the panel of
FIG. 10
may be twisted and folded for compact storage.
FIG. 13
is a perspective view of the sleeping bag of
FIG. 1
illustrating the liner.
FIG. 14
illustrates how two of the sleeping bags from
FIG. 7
can be electronically coupled.
FIG. 15
is a perspective view of a sleeping mat according to yet another embodiment of the present invention.
FIG. 16
illustrates the sleeping mat of
FIG. 15
in a rolled-up orientation for storage.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
The following detailed description is of the best presently contemplated modes of carrying out the invention. This description is not to be taken in a limiting sense, but is made merely for the purpose of illustrating general principles of embodiments of the invention. The scope of the invention is best defined by the appended claims.
Referring to
FIGS. 1-3
and
13
, a sleeping bag
20
according to one embodiment of the present invention has a generally rectangular outer layer
22
(also referred to as “case”) that is made of a suitable water-resistant sheet material, and a co-extensive inner rectangular layer or liner
24
that is preferably of a nappy material such as flannel. The layers
22
and
24
are connected together around their perimeters by stitching
26
to form a two-layer panel. The air space between the layers
22
and
24
provides a certain amount of insulation. If additional insulation is required, conventional insulating material or padding (not shown) may be inserted between the layers
22
and
24
and held in place by additional stitching extending across the layers
22
and
24
at spaced apart locations thereon.
A relatively rigid pad
28
can be positioned between the layers
22
and
24
to form a solid or rigid backing for a game board or other feature
30
that is to be provided on the outer surface of either or both of the case
22
and the liner
24
. The pad
28
can be positioned between the layers
22
and
24
before they are stitched together. It is also possible to stitch the pad
28
to certain predetermined locations on the two layers
42
,
44
. As shown in
FIG. 2
, the pad
28
can be provided in a corrugated form or with pre-folds
32
to allow the pad
28
to be folded when the sleeping bag
20
is folded for storage. The pad
28
can be made from a lightweight material that is capable of providing sufficiently rigidity to function as a game board or to support an activity thereon, and can include materials such as, but not limited, to cardboard, plastic, a thin metal sheet (such as aluminum), wood, fiberglass, resin and foam, among others. The pad
28
can be provided in any desired size, including a size up to the size of the two layers
22
,
24
. However, the pad
28
should have a size that is at least large enough to provide a backing and support for the intended feature
30
.
As illustrated in
FIGS. 1 and 3
, the feature
30
can be a game board that is provided on a portion of the outer surface
44
of the case
22
so that the user can use the sleeping bag
20
as a game board for playing chess or checkers. The game board can be a fabric piece that is stitched on to the outer surface
44
of the case
22
, or can be formed by a stitch pattern that makes up the desired game board design. Here, the game board is provided on half of the outer surface
44
of the case
22
, which is the upper half of the outer surface of the case
22
after the sleeping bag
20
has been folded over. The game board can also occupy most of the outer surface
44
of the case
22
or most of the entire outer surface
46
of the liner
24
if a larger game board were desired. For example,
FIG. 13
illustrates a smaller game board
30
a
positioned at about the center of the outer surface
46
of the liner
24
. Thus, the sleeping bag
20
can provide two separate and different game boards
30
and
30
a
on its two opposite surfaces
44
and
46
.
Zipper slides
36
and
38
can be secured by stitching
26
to the opposite side edges of the panel, and to the bottom of the panel on opposite sides of a vertical centerline
40
, so that when the panel is folded along the centerline
40
, the zipper slides
36
and
38
may be joined together by a zipper slider to form the sleeping bag
20
shown in FIG.
1
. It is possible to use other fasteners, such as hook and loop fasteners, snap fasteners, and the like, in lieu of the zipper. Access to the interior of the sleeping bag
20
can be through the open head
48
of the bag
20
.
FIG. 4A
illustrates another embodiment of a sleeping bag
50
according to the present embodiment. The sleeping bag
50
is the same as sleeping bag
20
, except that the pad
28
is omitted from the sleeping bag
50
, and in its place, an external pad
52
(which can have the same characteristics as the pad
28
) can be removably or permanently attached to the outer surface
54
of the outer layer or case
56
. For example, the external pad
52
can be stitched to the outer surface
54
, or can be removably coupled by opposing VELCRO™ pads
58
. A desired game board design can be provided on the external pad
52
.
FIG. 4B
illustrates a modification that can be made to the sleeping bag
50
in FIG.
4
A. In
FIG. 4B
, a fabric piece
59
having a feature or pattern (e.g., a game board) provided thereon can be stitched to the outer surface
54
of the sleeping bag
50
in a manner to form a sleeve
60
. In particular, opposing edges
61
and
62
can be stitched to the outer surface
54
, and an external pad
52
(which can be the same as the pad
52
in
FIG. 4A
) can be slid into the sleeve
60
to function as a support for the game board. The pad
52
can be removed when the sleeping bag
50
is to be folded up for storage.
FIG. 4C
illustrates another modification that can be made to the sleeping bag
50
in FIG.
4
A. In
FIG. 4C
, instead of the VELCRO™ pads
58
, four corner pieces
63
can be positioned on the outer surface
54
of the sleeping bag
50
. An external pad
64
(which can be the same as the pad
52
in
FIG. 4A
) having a pattern or feature (e.g., a game board) provided on a top surface
65
can be fitted into the space defined by the corner pieces
63
, and retained by the corner pieces
63
. The pad
64
can be removed when the sleeping bag
50
is to be folded up for storage.
FIG. 4D
illustrates a modification that can be made to the sleeping bags
50
in
FIGS. 4A and 4B
. In
FIG. 4C
, the outer surface
66
of the liner
67
is provided with a fabric piece
68
forming a sleeve
69
. A pattern or feature (e.g., a game board, an electronic game as illustrated in
FIGS. 7-9
below, etc.) can be provided on the top surface of the fabric piece
68
. The external pad
52
in
FIGS. 4A and 4B
can be slid into the sleeve
69
to function as a support for the pattern or feature. The pad
52
can be removed when the sleeping bag
50
is to be folded up for storage.
Although
FIGS. 1-4C
illustrate the feature
30
as being a game board, it is possible for the feature to include any design, item, element or feature that promotes an activity. For example,
FIG. 5
illustrates a sleeping bag
70
that is the same as sleeping bag
20
, except that a plurality of three-dimensional objects (such as stuffed toys
72
) can be removably (e.g., using VELCRO™ pads) or permanently attached (e.g., by stitching) to the outer surface
74
of the outer layer or case
76
.
As a further example,
FIG. 6
illustrates a sleeping bag
80
that is the same as sleeping bag
20
, except that a portable basket assembly
82
can be removably (e.g., using VELCRO™ pads) or permanently attached to the outer surface
84
of the outer layer or case
86
, and indicia
88
that represents a basketball court can be stitched or otherwise provided on the outer surface
84
to complement the basket assembly
82
. The basket assembly
82
can comprise two panels
90
and
92
that are provided in an inverted V-shaped configuration, with a panel
92
supporting a basket or hoop
94
. The basket assembly
82
can be embodied in any known form, and some examples are illustrated in
FIG. 8
of U.S. Pat. No. 6,155,281 and
FIGS. 2
,
4
,
6
and
8
of U.S. Pat. No. 6,030,300, whose disclosures are incorporated by this reference as though fully set forth herein.
It is also possible for these features
30
to be electrical appliances or components (such as the light bulbs, antennas, screens, touch sensors, on-off pads, and speakers, among others) that may need to be coupled to a power source to be driven, and may need to be coupled to processors for receiving and/or transmitting control, data or other signals. These electrical components and features can be attached to the outer surface
44
of the case
22
by either stitching, glue or any other known connection mechanisms. If necessary, wires can be coupled to these electrical components and power sources and processors for ensuring the transmission of power and signals therebetween, as illustrated below in connection with
FIGS. 7-9
. These electrical components can even communicate with a computer that can be provided either on the case
22
or liner
24
of the sleeping bag
20
, or at a remote location and in wireless (e.g., RF) communication with an antenna that is coupled to the sleeping bag
20
.
FIG. 7
illustrates another sleeping bag
100
that can be the same as sleeping bag
20
, except that the game board feature
30
is now replaced by a plurality of touch pads
102
that are secured to the outer surface
104
of the outer layer or case
106
. Each touch pad
102
can carry a different indicia (e.g., character, letter, number, etc.), and all the touch pads
102
can together form a path for a game or activity. The variety and amusement value of these games and activities, including any computer-programmed games, will depend on the features
30
provided with the sleeping bag
20
. A screen (e.g.,
108
in
FIG. 7
) can even be used to display the results of these games, which can be measured by, for example, sensors on the touch pads
102
.
As yet another example, these features
30
can provide the basis for educational games. For example, a speaker
110
can broadcast tasks that require a child to do a broadcasted task several times, and having the child count the number of times that the task has been performed. As another example, numbered graphics can be provided on these touch pads
102
and coupled (via the conductive paths and wiring described in connection with
FIGS. 8 and 9
below) to a processor
111
, which can control a game in which the different numbered graphics are made to light up at different times, in which a child is to follow the lighted graphics in (a) moving about the path on the outer surface
104
, (b) recognizing and repeating the lighted numbers, and (c) adding the lighted number to the previous sum, among others. The speaker can make announcements, emit congratulatory praises, or emit any other desired sounds or music. Other variations and themes for games utilizing numbered graphics are also possible, and can vary based on the educational or other objective(s) that are intended to be accomplished.
As a further non-limiting example, the touch pads
102
, antenna
112
, processor
111
, screen
108
and speaker
110
can even be the components that make up an interactive computer system that is capable of communicating (via wireless transmission, or a linked communication as illustrated in
FIG. 14
below) with other computing systems. Thus, the sleeping bag
100
can actually form an “interactive” or “computing” station for a user, where the user can use the touch pads
102
as input devices, and the screen
108
as an output device, for playing games, doing word processing, surfing the Internet, and communicating with other computing systems. Other features
30
that can be incorporated with the sleeping bag
20
include cellular phones, microphones, musical instruments, radios, zippers, snaps, tethered balls, squeeze items, pinwheels or spinning wheels, sockets, slap items (i.e., items that emit sounds when slapped), buckles, corks, whistles, pedals, and doorbells, among others. Thus, the structures
20
and
100
in
FIGS. 1 and 7
provide the user with much added utility, educational value, and play variety.
FIG. 8
illustrates one method for electrically coupling the touch pads
102
and speaker
110
. The other electrical elements (e.g., the antenna
112
, screen
108
, processor
111
) can all be coupled using the same principles. A plurality of touch pads
102
are attached (e.g., by glue or stitching) to selected locations on the outer surface
104
of the case
106
, and connected by wires
118
to a power source
120
which can be a battery pack. A fabric or other cover
122
can be provided which is configured or cut to follow the path created by the touch pads
102
and the wires
118
. Specific indicia
124
can be stitched or otherwise attached to the locations on the cover
122
that would overlie the corresponding touch pads
102
. The cover
122
is then stitched (along stitch lines
126
) to the outer surface
104
of the case
106
to cover and protect the touch pads
102
and wires
118
. Instead of using stitching, the speaker
110
can be attached to the cover
122
by screws
128
.
FIG. 9
illustrates another method for electrically coupling the touch pads
102
and other electrical elements (e.g., speaker
110
). As with
FIG. 8
, a plurality of touch pads
102
are attached (e.g., by glue or stitching) to selected locations on the outer surface
104
of the case
106
, but the electrical connections are accomplished by conductive paths
134
. A fabric or other cover
122
can still be provided which is configured or cut to follow the path created by the touch pads
102
and the conductive paths
134
. Specific indicia
124
can be stitched or otherwise attached to the locations on the cover
122
that would overlie the corresponding touch pads
102
. The cover
122
is then stitched (along stitch lines
126
) to the outer surface
104
of the case
106
to cover and protect the touch pads
102
and conductive paths
134
. Each conductive path
134
can include the conductive lines, stripes, traces, compositions, inks, liquids, pastes, granules and colored inks, and can utilize the electrical systems and attachment techniques, described in U.S. Pat. No. 5,455,749 to Ferber, U.S. Pat. No. 5,371,657 to Wiscombe, U.S. Pat. No. 5,626,948 to Ferber et al., and U.S. Pat. No. 5,973,420 to Kaiserman et al., as well as those that are known in the art. One non-limiting example of a material that can be used as a conductive ink is a material sold under the tradename 102-05F by Creative Materials of Tyngsboro, Mass. Other materials are described in one or more of U.S. Pat. No. 5,455,749 to Ferber, U.S. Pat. No. 5,371,657 to Wiscombe, U.S. Pat. No. 5,626,948 to Ferber et al., and U.S. Pat. No. 5,973,420 to Kaiserman et al.
FIGS. 10 and 11
illustrate a sleeping bag
200
according to yet a different embodiment of the present invention. The sleeping bag
200
has a base panel
202
that is separate from a blanket portion
204
. The blanket portion
204
can be made in the same manner as the sleeping bag
20
(and its case
22
and liner
24
) described above in connection with
FIGS. 1-3
and
13
, with or without the pad
28
. The blanket
204
can be stitched or removably attached (e.g., via VELCRO™ pads, hooks, zippers, etc.) along one of its vertical sides
206
and its bottom side
208
to a vertical side
210
and bottom side
212
of the panel
202
to define an internal sleeping space. The other vertical sides
214
and
216
of the panel
202
and the blanket portion
204
, respectively, can be zippered in the same manner described about for sleeping bag
20
.
The panel
202
has a continuous frame retaining sleeve
220
that is provided along and traverses the four edges of the four sides
210
,
212
,
214
and
222
. The sleeve
220
is formed by folding a piece of fabric and applying a stitching
221
. Even though the panel
202
is illustrated as having four sides, it can have any number of sides, or each side can even be curved. A continuous frame member
224
is retained or held within the frame retaining sleeve
220
to support the panel
202
. The continuous frame member
224
can be provided as one continuous loop, or may comprise a strip of material connected at both ends to form a continuous loop. The continuous frame member
224
can be formed of flexible coilable steel having a memory, although other materials such as plastics, or a combination of plastics and metal, may also be used. The frame member
224
should be made of a material which is relatively strong and yet is flexible to a sufficient degree to allow it to be coiled. Thus, the frame member
224
is capable of assuming two positions or orientations, an open or expanded position such as shown in
FIG. 10
, or a folded position in which the frame member is collapsed into a size which is much smaller than its open position (see FIG.
12
D). It is also possible for the principles of the present invention to be utilized with frame members that do not have a memory characteristic (i.e., not foldable or coilable).
Fabric or sheet material
226
extends across portions of the panel
202
, and is held taut by the frame member
224
when in its open position. The term fabric is to be given its broadest meaning and should be made from strong, lightweight materials and may include woven fabrics, sheet fabrics or even films. The fabric should be water-resistant and durable to withstand the wear and tear associated with rough treatment by children. The frame member
224
may be merely retained within the frame retaining sleeve
220
without being connected thereto. Alternatively, the frame retaining sleeve
220
may be mechanically fastened, stitched, fused, or glued to the frame member
224
to retain it in position.
FIGS. 12A through 12E
describe the various steps for folding and collapsing the panel
202
(and its accompanying blanket portion
204
) for storage. In
FIG. 12A
, the opposite border of the panel
202
is folded in (see arrow
230
) to collapse the frame member
224
with the panel
202
. As shown in
FIG. 12B
, the next step is to continue the collapsing so that the initial size of the panel
202
is reduced.
FIG. 12C
shows the next step with the frame member
224
and panel
202
collapsed on each other to provide for a small essentially compact configuration having a plurality of concentric frame members and layers of the fabric
226
so that the collapsed panel
202
has a size which is a fraction of the size of the initial structure
202
, as shown in FIG.
12
D.
To re-open the panel
202
to its expanded configuration, the folded panel
202
is unfolded. The memory (i.e., spring-load) of the frame member
224
will cause the frame member
224
to uncoil on its own and to quickly expand the panel
202
to its expanded configuration shown in FIG.
10
.
Any of the features
30
(including electrical components) described above can be provided on either surface
232
or
234
of the blanket portion
204
, or on either surface of the fabric
226
of the panel
202
. For example,
FIG. 10
illustrates a game board
238
provided on the top surface
232
of the blanket portion
204
, and another game board
240
provided on the inner surface of the fabric
226
. As a result, the panel
202
can be used as the supporting surface for any amusement feature or game board. Alternatively, the blanket portion
204
can include the pad
28
which acts as the supporting surface for any amusement feature or game board.
FIGS. 14 and 15
illustrate other embodiments of the present invention, which exemplify the wide variety of enhancements and features that are provided by the principles of the present invention. For example,
FIG. 14
illustrates two sleeping bags
100
a
and
100
b
, each of which can be the same as the sleeping bag
100
in FIG.
7
. The difference is that each sleeping bag
100
a
and
100
b
can be coupled to each other via straps
101
a
and
101
b
that are coupled to the electrical circuits in the sleeping bags
100
a
and
100
b
, respectively. Each strap
101
a
and
101
b
can carry a communication port
103
a
and
103
b
, respectively, that can be connected together to link the electrical systems in the two sleeping bags
100
a
and
100
b
. Additional straps (e.g.,
105
b
) can be provided for each sleeping bag (e.g.,
100
b
) to allow the sleeping bag to be electronically coupled to other sleeping bags.
Although most of the embodiments of the present invention are illustrated as being in the form of a sleeping bag, the principles of the present invention are equally applicable to sleeping mats.
FIG. 15
illustrates a sleeping mat
300
that can be configured in the same manner as the sleeping bag
20
, in that it has an outer layer
302
(corresponding to the outer layer
22
) and a liner
304
(corresponding to the liner
24
) that are connected together to form a two-layer panel. The difference between the mat
300
and the sleeping bag
20
is that the mat
300
is not folded over about a centerline. The mat
300
can also have a pad
306
(which can be the same as pad
28
), shown in phantom in
FIG. 15
) provided between the outer layer
302
and the liner
304
. Any of the features described herein (e.g., game boards, electrical elements, touch pads, three-dimensional toys, sports, etc.) can be provided on the surfaces of the outer layer
302
and/or the liner
304
using the principles described hereinabove. For example, a speaker
308
is illustrated as being provided on the liner
304
. The mat
300
can be rolled up for storage, as shown in
FIG. 16. A
strap or band
310
can be used to tie the rolled-up mat
300
during storage. In fact, any of the sleeping bags
20
,
50
,
70
,
80
and
100
can be rolled up in the same manner for storage.
Thus, the embodiments of the present invention increase the applications and use of a conventional sleeping bag to provide the user with an unlimited source and variety of fun and entertainment. The enhancements and features allow numerous functions, operations, and games to be utilized or played in connection with the sleeping bag, and significantly extends the useful applications of the sleeping bag.
While the description above refers to particular embodiments of the present invention, it will be understood that many modifications may be made without departing from the spirit thereof. The accompanying claims are intended to cover such modifications as would fall within the true scope and spirit of the present invention.
Claims
- 1. A sleeping apparatus, comprising:a first layer having a peripheral edge and an outer surface; a second layer having an outer surface, and a peripheral edge that is attached to the peripheral edge of the first layer along the entirety of the peripheral edges so as to define an enclosed space between the first and second layers; a rigid pad positioned in the enclosed space between the first and second layers in a manner, wherein the pad has at least one pre-formed fold line; and an amusement feature provided on the outer surface of either the first layer or the second layer.
- 2. The apparatus of claim 1, wherein the amusement feature is a game board.
- 3. The apparatus of claim 1, wherein the amusement feature is removably attached to the outer surface of either the first layer or the second layer.
- 4. The apparatus of claim 1, wherein the amusement feature is a three-dimensional toy.
- 5. The apparatus of claim 1, wherein the amusement feature includes at least one electrical device.
- 6. The apparatus of claim 5, wherein the amusement feature includes a plurality of electrical devices coupled to each other by electrical coupling.
- 7. The apparatus of claim 6, wherein the electrical coupling includes conductive path.
- 8. The apparatus of claim 6, wherein the electrical coupling includes wires.
- 9. The apparatus of claim 1, wherein the first and second layers are made from a woven material.
- 10. A sleeping apparatus, comprising:a first layer having a peripheral edge and an outer surface; a second layer having an outer surface, and a peripheral edge that is attached to the peripheral edge of the first layer along the entirety of the peripheral edges so as to define an enclosed space between the first and second layers; an amusement feature provided on the outer surface of either the first layer or the second layer; and a rigid pad coupled to the outer surface that the amusement feature is provided on, the rigid pad providing a support for the amusement feature, wherein the pad has at least one pre-formed fold line.
- 11. The apparatus of claim 10, wherein the amusement feature is removably attached to the outer surface of either the first layer or the second layer.
- 12. The apparatus of claim 10, wherein the amusement feature includes at least one electrical device.
- 13. The apparatus of claim 12, wherein the amusement feature includes a plurality of electrical devices coupled to each other by electrical coupling.
- 14. The apparatus of claim 13, wherein the electrical coupling includes conductive path.
- 15. The apparatus of claim 13, wherein the electrical coupling includes wires.
- 16. The apparatus of claim 10, wherein the first and second layers are made from a woven material.
- 17. The apparatus of claim 10, wherein the amusement feature is a game board.
- 18. The apparatus of claim 10, wherein the amusement feature is a three-dimensional toy.
US Referenced Citations (22)
Foreign Referenced Citations (1)
Number |
Date |
Country |
2400873 |
Mar 1979 |
FR |