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Micro floppy disc cassette
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Patent number 4,644,435
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Issue date Feb 17, 1987
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Sony Corporation
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Tsuneo Nemoto
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G11 - INFORMATION STORAGE
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Flexible disc cassette
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Patent number 4,589,105
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Issue date May 13, 1986
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Sony Corporation
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Tsuneo Nemoto
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G11 - INFORMATION STORAGE
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Tape reel
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Patent number 4,203,564
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Issue date May 20, 1980
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Sony Corporation
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Tsuneo Nemoto
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G11 - INFORMATION STORAGE
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Reel for tape
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Patent number 4,176,804
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Issue date Dec 4, 1979
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Sony Corporation
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Tsuneo Nemoto
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G11 - INFORMATION STORAGE