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Non-impact spark jet print head
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Patent number 4,647,949
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Issue date Mar 3, 1987
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General Instrument Corporation
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Thomas P. Sapitowicz
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B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
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Rotary drum non-impact printer
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Patent number 4,642,660
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Issue date Feb 10, 1987
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General Instrument Corporation
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Gerald S. Stevens
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B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
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Document processing apparatus
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Patent number 4,626,672
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Issue date Dec 2, 1986
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General Instrument Corporation
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Thomas P. Sapitowicz
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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Hammer for dot matrix printer
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Patent number 4,349,283
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Issue date Sep 14, 1982
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General Instrument Corporation
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Thomas P. Sapitowicz
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B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS