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Pen retention apparatus
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Patent number 7,862,248
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Issue date Jan 4, 2011
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International Business Machines Corporation
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David C. Brower
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B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
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Pen retention apparatus
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Patent number 7,488,131
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Issue date Feb 10, 2009
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International Business Machines Corporation
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David C. Brower
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B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
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Pen retention apparatus
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Patent number 7,410,319
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Issue date Aug 12, 2008
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International Business Machines Corporation
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David C. Brower
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B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
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Electronic feeler gauge
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Patent number 6,438,858
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Issue date Aug 27, 2002
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International Business Machines Corporation
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Joseph Nelson Arnold
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B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
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