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Kazutake Sugawara
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Hachioji, JP
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last 30 patents
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Patent Grant
Track-address judging method
Patent number
5,293,568
Issue date
Mar 8, 1994
Olympus Optical Co., Ltd.
Mitsuo Oshiba
G11 - INFORMATION STORAGE
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Patent Grant
Optical recording and reproducing apparatus
Patent number
4,706,232
Issue date
Nov 10, 1987
Olympus Optical Co., Ltd.
Saburo Funada
G11 - INFORMATION STORAGE