TREA

Gerald Carl Sienkiewicz

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  • Raleigh, NC, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Endless ribbon cartridge
    • Patent number 4,236,678
    • Issue date Dec 2, 1980
    • International Business Machines Corporation
    • Gerald C. Sienkiewicz
    • B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
  • Information Patent Grant

    Ribbon cartridge
    • Patent number 3,941,231
    • Issue date Mar 2, 1976
    • International Business Machines Corporation
    • George Coleman Matuck
    • B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS