Trackball for computer

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Information

Patent Grant
D326261

References
Source

Patent Number
D326,261
Date Filed
Friday, March 8, 1991
33 years ago
Date Issued
Tuesday, May 19, 1992
32 years ago

Inventors
Original Assignees
- Microsoft Corporation
Examiners
- Burke; Wallace R.
- Nunn; Freda S.
Agents
- Seed and Berry

US Classifications
- D14 - Recording, communication, or information retrieval equipment
Field of Search
- US
- D14 100
- D14 105
- D14 106
- D14 107
- D14 114
- D13 162
- D13 168
- D21 48
- 074 471 XY
- 178 18
- 178 19
- 200 5 A
- 200 5 R
- 200 6 A
- 200 6 R
- 273 148 B
- 340 709
- 340 710
- 340 712
- 235 472
- Term of Grant
  14Years

Information

Abstract

Description

Claims

The ornamental design for a trackball for computer, as shown and described.

US Referenced Citations (5)

Number	Name	Date	Kind
D285445	Davis et al.	Sep 1986
D299140	Nakamura	Dec 1988
D305756	Parker et al.	Jan 1990
D309449	MacDonald et al.	Jul 1990
D314193	Ishihara et al.	Jan 1991

Non-Patent Literature Citations (1)

Entry
Portable Office, Apr. 1991, p. 70, Logitech Pointers (center of page).

Continuation in Parts (2)

	Number	Date	Country
Parent	598562	Oct 1990
Parent	425527	Oct 1989