TREA

Charles W. Clark

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  • Seattle, WA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Hoist having worm safety device
    • Patent number 4,625,946
    • Issue date Dec 2, 1986
    • Ederer Incorporated
    • Charles W. Clark
    • B66 - HOISTING LIFTING HAULING
  • Information Patent Grant

    Safety mechanism for hoisting drums
    • Patent number 4,518,153
    • Issue date May 21, 1985
    • Ederer Incorporated
    • Harold H. West
    • B66 - HOISTING LIFTING HAULING
  • Information Patent Grant

    Hoist drive safety system
    • Patent number 4,493,479
    • Issue date Jan 15, 1985
    • Ederer Incorporated
    • Charles W. Clark
    • B66 - HOISTING LIFTING HAULING