TREA

William J. Hanson

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  • San Diego, CA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Image permanence method
    • Patent number 4,869,921
    • Issue date Sep 26, 1989
    • Pierce Companies, Inc.
    • Edward R. Gabel
    • B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
  • Information Patent Grant

    Image permanence device
    • Patent number 4,779,558
    • Issue date Oct 25, 1988
    • Pierce Companies, Inc.
    • Edward R. Gabel
    • B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS