TREA

Roland Weiss

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  • Iserlohn, DE
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Patents Grantslast 30 patents

  • Information Patent Grant

    Diverter valve
    • Patent number 6,182,700
    • Issue date Feb 6, 2001
    • Friedrich Grohe AG & Co. KG
    • Fred Hannemann
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Handle assembly for single-control valve
    • Patent number 5,850,846
    • Issue date Dec 22, 1998
    • Friedrich Grohe AG
    • Fred Hannemann
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Vented backflow preventer for hose-type faucet
    • Patent number 5,651,504
    • Issue date Jul 29, 1997
    • Friedrich Grohe Aktiengesellschaft
    • Frank-Thomas Luig
    • E03 - WATER SUPPLY SEWERAGE