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Book on a pocket card
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Patent number D313428
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Issue date Jan 1, 1991
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Drexler Technology Corporation
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Jerome Drexler
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D19 - Office supplies
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Book on a pocket card
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Patent number 4,917,292
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Issue date Apr 17, 1990
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Drexler Technology Corporation
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Jerome Drexler
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G11 - INFORMATION STORAGE
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Portable detachable data record
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Patent number 4,896,027
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Issue date Jan 23, 1990
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Drexler Technology Corporation
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Jerome Drexler
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G06 - COMPUTING CALCULATING COUNTING
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Read-only optical data card
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Patent number 4,863,819
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Issue date Sep 5, 1989
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Drexler Technology Corporation
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Jerome Drexler
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G06 - COMPUTING CALCULATING COUNTING
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