Gerald W. Keller

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Dallas, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Quick connector and shut-off valve assembly for heat recovery system
- Patent number 4,321,797
- Issue date Mar 30, 1982
- Air & Refrigeration Corp.
- Ronald J. Yaeger
- F24 - HEATING RANGES VENTILATING
Information Patent Grant
Heat recovery and hot water circulation system
- Patent number 4,316,367
- Issue date Feb 23, 1982
- Ronald J. Yaeger
- F24 - HEATING RANGES VENTILATING
Information Patent Grant
Waste heat recovery system
- Patent number 4,226,606
- Issue date Oct 7, 1980
- Air & Refrigeration Corp.
- Ronald J. Yaeger
- F24 - HEATING RANGES VENTILATING