Frank-Thomas Luig

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Frondenberg, DE

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Patents Grantslast 30 patents

Information Patent Grant
Recessed valve with built-in backflow preventer
- Patent number 5,947,147
- Issue date Sep 7, 1999
- Friedrich Grohe AG
- Werner Gnauert
- E03 - WATER SUPPLY SEWERAGE
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
Information Patent Grant
Sprayer faucet with antibackflow protection
- Patent number 5,213,268
- Issue date May 25, 1993
- Friedrich Grohe Aktiengesellschaft
- Werner Gnauert
- E03 - WATER SUPPLY SEWERAGE
Information Patent Grant
Vented mixing-type diverter faucet
- Patent number 5,213,131
- Issue date May 25, 1993
- Friedrich Grohe Aktiengesellschaft
- Werner Gnauert
- E03 - WATER SUPPLY SEWERAGE