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Cassette tape player
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Patent number 4,491,889
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Issue date Jan 1, 1985
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Alps Electric Co., Ltd.
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Tatsuhiko Tsuchiya
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G11 - INFORMATION STORAGE
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3818504
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Patent number 3,818,504
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Issue date Jun 18, 1974
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G11 - INFORMATION STORAGE
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3797780
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Patent number 3,797,780
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Issue date Mar 19, 1974
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G11 - INFORMATION STORAGE