TREA

Earl W. Smith

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  • Wilmington, DE, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Method for leakage measurement
    • Patent number RE31884
    • Issue date May 14, 1985
    • Hunter Environmental Services, Inc.
    • William B. Hansel
    • 073 - Measuring and testing
  • Information Patent Grant

    Method for leakage measurement
    • Patent number 4,300,388
    • Issue date Nov 17, 1981
    • Sun Oil Company of Pennsylvania
    • William B. Hansel
    • G01 - MEASURING TESTING