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Quick replay device
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Patent number 4,050,699
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Issue date Sep 27, 1977
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Keijiro Sawano
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G11 - INFORMATION STORAGE
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3662350
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Patent number 3,662,350
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Issue date May 9, 1972
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G11 - INFORMATION STORAGE
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3403067
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Patent number 3,403,067
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Issue date Sep 24, 1968
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G11 - INFORMATION STORAGE
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2959419
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Patent number 2,959,419
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Issue date Nov 8, 1960
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G11 - INFORMATION STORAGE