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Magnetic recording medium
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Patent number 4,820,565
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Issue date Apr 11, 1989
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Hitachi Maxell, Ltd.
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Masaya Funahashi
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G11 - INFORMATION STORAGE
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Magnetic recording medium
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Patent number 4,797,321
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Issue date Jan 10, 1989
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Hitachi Maxell, Ltd.
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Masaya Funahashi
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G11 - INFORMATION STORAGE
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Magnetic recording medium
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Patent number 4,696,869
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Issue date Sep 29, 1987
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Hitachi Maxell, Ltd.
-
Masaya Funahashi
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G11 - INFORMATION STORAGE
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Magnetic recording medium
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Patent number 4,690,864
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Issue date Sep 1, 1987
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Hitachi Maxell, Ltd.
-
Masaya Funahashi
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G11 - INFORMATION STORAGE
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Magnetic recording medium
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Patent number 4,522,885
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Issue date Jun 11, 1985
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Hitachi Maxell, Ltd.
-
Masaya Funahashi
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G11 - INFORMATION STORAGE