David W. Keech

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Bryan, OH, US

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Patents Grantslast 30 patents

Information Patent Grant
T-fitting for use with different diameter pipes
- Patent number 4,703,956
- Issue date Nov 3, 1987
- The Scott & Fetzer Company
- David W. Keech
- E03 - WATER SUPPLY SEWERAGE
Information Patent Grant
T-fitting with one way valve and water level sensor for a sump appa...
- Patent number 4,631,001
- Issue date Dec 23, 1986
- The Scott & Fetzer Co.
- David W. Keech
- G05 - CONTROLLING REGULATING