TREA

Donald J. Steger

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  • Corinth, KY, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Thermal printer
    • Patent number 4,650,351
    • Issue date Mar 17, 1987
    • International Business Machines Corporation
    • Vencil D. Engle
    • B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
  • Information Patent Grant

    Flat rate spring particularly adapted for typewriter cartridges
    • Patent number 4,367,052
    • Issue date Jan 4, 1983
    • International Business Machines Corporation
    • Donald J. Steger
    • B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
  • Information Patent Grant

    Ribbon shaper for typewriter cartridge
    • Patent number 4,272,201
    • Issue date Jun 9, 1981
    • International Business Machines Corporation
    • Donald J. Steger
    • B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
  • Information Patent Grant

    Cartridge assembly apparatus for typewriters
    • Patent number 4,239,107
    • Issue date Dec 16, 1980
    • International Business Machines Corporation
    • Richard G. Boyatt
    • B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS