TREA

Elmer J. Simpson

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  • Margate, FL, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Elevator and method of lifting
    • Patent number 4,363,380
    • Issue date Dec 14, 1982
    • Glen A. Rued
    • B66 - HOISTING LIFTING HAULING
  • Information Patent Grant

    Elevator fluid flow control valve
    • Patent number 4,345,507
    • Issue date Aug 24, 1982
    • Elevator Equipment Co.
    • Elmer J. Simpson
    • B66 - HOISTING LIFTING HAULING
  • Information Patent Grant

    Valve control system
    • Patent number 4,311,212
    • Issue date Jan 19, 1982
    • Elevator Equipment Co.
    • Elmer J. Simpson
    • B66 - HOISTING LIFTING HAULING