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Magnetic recording medium
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Patent number 4,844,977
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Issue date Jul 4, 1989
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Konishiroku Photo Industry Co., Ltd.
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Issei Nakamura
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G11 - INFORMATION STORAGE
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Magnetic recording medium
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Patent number 4,789,591
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Issue date Dec 6, 1988
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Konishiroku Photo Industry Co., Ltd.
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Issei Nakamura
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G11 - INFORMATION STORAGE
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Magnetic recording medium
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Patent number 4,572,867
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Issue date Feb 25, 1986
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Konishiroku Photo Industry Co., Ltd.
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Issei Nakamura
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G11 - INFORMATION STORAGE
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Magnetic recording medium
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Patent number 4,572,866
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Issue date Feb 25, 1986
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Konishiroku Photo Industry Co., Ltd.
-
Issei Nakamura
-
G11 - INFORMATION STORAGE
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