TREA

John Boldt

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  • San Ramon, CA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Color printer
    • Patent number 4,469,459
    • Issue date Sep 4, 1984
    • Envision Technology, Inc.
    • Richard Trezise
    • B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
  • Information Patent Grant

    Cartridge for matrix printer
    • Patent number 4,448,556
    • Issue date May 15, 1984
    • Chroma
    • Richard Trezise
    • B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS