TREA

Arthur W. Henke

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  • Ann Arbor, MI, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Magnetically actuated level indicator
    • Patent number 4,547,916
    • Issue date Oct 22, 1985
    • Thetford Corporation
    • Arthur W. Henke
    • E03 - WATER SUPPLY SEWERAGE
  • Information Patent Grant

    Portable toilet
    • Patent number D262050
    • Issue date Nov 24, 1981
    • Thetford Corporation
    • John M. Antos
    • D23 - Environmental heating and cooling
  • Information Patent Grant

    Toilet
    • Patent number D257385
    • Issue date Oct 14, 1980
    • Thetford Corporation
    • Frank T. Sargent
    • D23 - Environmental heating and cooling
  • Information Patent Grant

    Toilet
    • Patent number D256722
    • Issue date Sep 2, 1980
    • Thetford Corporation
    • Charles L. Sargent
    • D23 - Environmental heating and cooling
  • Information Patent Grant

    Portable toilet
    • Patent number 4,217,668
    • Issue date Aug 19, 1980
    • Thetford Corporation
    • Charles L. Sargent
    • E03 - WATER SUPPLY SEWERAGE
  • Information Patent Grant

    Portable toilets
    • Patent number 4,215,445
    • Issue date Aug 5, 1980
    • Thetford Corporation
    • John M. Antos
    • E03 - WATER SUPPLY SEWERAGE
  • Information Patent Grant

    Portable toilet with improved flush apparatus
    • Patent number 4,185,337
    • Issue date Jan 29, 1980
    • Thetford Corporation
    • Frank T. Sargent
    • E03 - WATER SUPPLY SEWERAGE
  • Information Patent Grant

    Toilet apparatus
    • Patent number 4,185,340
    • Issue date Jan 29, 1980
    • Thetford Corporation
    • Frank T. Sargent
    • E03 - WATER SUPPLY SEWERAGE
  • Information Patent Grant

    Portable toilets
    • Patent number 4,180,876
    • Issue date Jan 1, 1980
    • Thetford Corporation
    • Frank T. Sargent
    • E03 - WATER SUPPLY SEWERAGE
  • Information Patent Grant

    Portable toilet
    • Patent number 3,949,430
    • Issue date Apr 13, 1976
    • Thetford Corporation
    • Marshall W. Miller
    • E03 - WATER SUPPLY SEWERAGE