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Dunstan P. Sheldon
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Altadena, CA, US
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last 30 patents
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Patent Grant
Mobile check-in station and method of use
Patent number
6,112,989
Issue date
Sep 5, 2000
Dunstan P. Sheldon
G07 - CHECKING-DEVICES
Information
Patent Grant
Ticketless travel card and method of use
Patent number
5,504,321
Issue date
Apr 2, 1996
Dunstan P. Sheldon
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Composite ticket processing unit
Patent number
5,010,240
Issue date
Apr 23, 1991
Mag-Tek, Inc.
Dunstan P. Sheldon
G07 - CHECKING-DEVICES
Information
Patent Grant
Dual printer system
Patent number
4,960,338
Issue date
Oct 2, 1990
Dunstan P. Sheldon
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
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Patent Grant
Construction for mounting an ink ribbon cassette in a heat transfer...
Patent number
4,944,619
Issue date
Jul 31, 1990
Star Seimitsu Kabushiki Kaisha
Kenji Suzuki
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information
Patent Grant
Multiple document parallel printing apparatus
Patent number
4,879,268
Issue date
Nov 7, 1989
Dunstan P. Sheldon
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information
Patent Grant
Form printer
Patent number
4,744,681
Issue date
May 17, 1988
Dunstan P. Sheldon
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information
Patent Grant
Package to form panel structure for use on water body
Patent number
4,458,668
Issue date
Jul 10, 1984
Dunstan P. Sheldon
F24 - HEATING RANGES VENTILATING