TREA

Charles O. Ehret

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  • St. Louis, MO, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Air flow control system
    • Patent number 4,977,818
    • Issue date Dec 18, 1990
    • Harry L. Taylor
    • F24 - HEATING RANGES VENTILATING
  • Information Patent Grant

    Bolt lock
    • Patent number 4,968,072
    • Issue date Nov 6, 1990
    • Harry L. Taylor
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
  • Information Patent Grant

    Air flow control system
    • Patent number 4,928,583
    • Issue date May 29, 1990
    • Harry L. Taylor
    • F24 - HEATING RANGES VENTILATING