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Three pole printhead actuator
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Patent number 4,840,501
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Issue date Jun 20, 1989
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Dataproducts Corporation
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Kam C. Wong
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B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
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Disc printer
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Patent number 4,212,549
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Issue date Jul 15, 1980
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Dataproducts Corporation
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Albert L. Edwards
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B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
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Concave impact print hammers
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Patent number 4,134,337
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Issue date Jan 16, 1979
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Dataproducts Corporation
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Aram S. Arzoumanian
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B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
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Impact printer magnet assembly
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Patent number 4,114,532
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Issue date Sep 19, 1978
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Dataproducts Corporation
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Aram Sarkis Arzoumanian
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B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS