Douglas W. DeWerth

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Cleveland, OH, US

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Patents Grantslast 30 patents

Information Patent Grant
Common vent device for positive vent pressure and draft hood equipp...
- Patent number 4,768,444
- Issue date Sep 6, 1988
- Gas Research Institute
- Douglas W. DeWerth
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information Patent Grant
Flame insert
- Patent number 4,629,415
- Issue date Dec 16, 1986
- Gas Research Institute
- Douglas W. DeWerth
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information Patent Grant
Regulation of blue flame combustion emissions
- Patent number 4,525,141
- Issue date Jun 25, 1985
- Gas Research Institute
- Douglas W. DeWerth
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES