TREA

Leonard H. Copeland

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  • York, PA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Fog-resistant gauge
    • Patent number 4,628,731
    • Issue date Dec 16, 1986
    • Datcon Instrument Company
    • Leonard H. Copeland
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Elapsed time indicator
    • Patent number 4,207,733
    • Issue date Jun 17, 1980
    • Datcon Instrument Company
    • Leonard H. Copeland
    • G04 - HOROLOGY