TREA

Louis R. Calkins

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  • Pinckney, MI, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Liquid level sensor frequency output system
    • Patent number 8,650,949
    • Issue date Feb 18, 2014
    • S.J. Electro Systems, Inc.
    • Mark R. Ostlie
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Motor power module
    • Patent number 8,508,374
    • Issue date Aug 13, 2013
    • SJE-Rhombus
    • Aaron R. Wolfe
    • G01 - MEASURING TESTING