TREA

William J. Baumbach

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  • Fairfax Station, VA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Automatic sewage valve
    • Patent number 4,272,640
    • Issue date Jun 9, 1981
    • William J. Baumbach
    • E03 - WATER SUPPLY SEWERAGE
  • Information Patent Grant

    Drain control device
    • Patent number 4,098,287
    • Issue date Jul 4, 1978
    • William J. Baumbach
    • E03 - WATER SUPPLY SEWERAGE