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Toshiro Tanaka
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Izumi, JP
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last 30 patents
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Patent Grant
Magnetic recording medium
Patent number
4,172,176
Issue date
Oct 23, 1979
Sony Corporation
Toshiro Tanaka
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic recording medium
Patent number
4,156,052
Issue date
May 22, 1979
Sony Corporation
Toshiro Tanaka
G11 - INFORMATION STORAGE