TREA

Charles A. Erdman

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  • Marlton, NJ, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Truncated ball pen
    • Patent number 4,017,870
    • Issue date Apr 12, 1977
    • Graphic Controls Corporation
    • James R. Hubbard
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Instrument pen with integral pen arm attachment means
    • Patent number 3,983,569
    • Issue date Sep 28, 1976
    • Graphic Controls Corporation
    • James R. Hubbard
    • G01 - MEASURING TESTING