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Kawasaki, JP
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last 30 patents
Information
Patent Grant
IC card system for a game machine
Patent number
6,616,535
Issue date
Sep 9, 2003
Schlumberger Systems
Tsutao Nishizaki
G07 - CHECKING-DEVICES
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Patent Grant
Game apparatus using a vehicle with an optical image synthesizing s...
Patent number
5,716,281
Issue date
Feb 10, 1998
Sega Enterprises, Ltd.
Shingo Dote
F41 - WEAPONS
Information
Patent Grant
Optical device and beam gun device using this optical device
Patent number
5,213,335
Issue date
May 25, 1993
Sega Enterprises, Ltd.
Shingo Dote
G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS