Robert A. Richter

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Seal Beach, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Selectable toilet-water-level flushing system
- Patent number 5,129,110
- Issue date Jul 14, 1992
- Robert A. Richter
- E03 - WATER SUPPLY SEWERAGE
Information Patent Grant
Improved toilet-tank flapper valve
- Patent number 5,117,514
- Issue date Jun 2, 1992
- Robert A. Richter
- E03 - WATER SUPPLY SEWERAGE