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Christmas tree cart
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Patent number 6,260,335
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Issue date Jul 17, 2001
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Edward Frank Helinski
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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Hole punching apparatus
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Patent number 5,924,350
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Issue date Jul 20, 1999
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International Business Machines Corporation
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Edward F. Helinski
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B30 - PRESSES
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Interposer device for impact printers
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Patent number 5,245,921
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Issue date Sep 21, 1993
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International Business Machines Corporation
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Edward F. Helinski
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B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
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Dual pitch impact printer
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Patent number 4,759,647
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Issue date Jul 26, 1988
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International Business Machines Corporation
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Edward F. Helinski
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B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
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Serial ring actuator
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Patent number 4,438,419
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Issue date Mar 20, 1984
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International Business Machines Corporation
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Edward F. Helinski
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H01 - BASIC ELECTRIC ELEMENTS
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Dot matrix printer
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Patent number 4,359,937
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Issue date Nov 23, 1982
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International Business Machines Corporation
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Edward F. Helinski
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B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
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Magnetic actuator using modulated flux
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Patent number 4,242,658
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Issue date Dec 30, 1980
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International Business Machines Corporation
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Edward F. Helinski
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B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
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Ribbon storage device
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Patent number 4,212,420
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Issue date Jul 15, 1980
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International Business Machines Corporation
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Edward F. Helinski
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B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
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