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-
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Tape cartridge
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Patent number 4,731,687
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Issue date Mar 15, 1988
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Hitachi Maxell, Ltd.
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Shinichi Kagano
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G11 - INFORMATION STORAGE
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Magnetic tape cassette
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Patent number 4,669,018
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Issue date May 26, 1987
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Fuji Photo Film Co., Ltd.
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Kengo Oishi
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G11 - INFORMATION STORAGE
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Magnetic shielding spring
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Patent number 4,392,169
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Issue date Jul 5, 1983
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U.S. Philips Corporation
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Carolus J. Boullart
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G11 - INFORMATION STORAGE
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3851115
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Patent number 3,851,115
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Issue date Nov 26, 1974
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G11 - INFORMATION STORAGE
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3789157
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Patent number 3,789,157
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Issue date Jan 29, 1974
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G11 - INFORMATION STORAGE