David DuSell Gray

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Sammamish, WA, US

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Patents Grantslast 30 patents

Information Patent Grant
Rotary combustion apparatus
- Patent number 8,539,930
- Issue date Sep 24, 2013
- David DuSell Gray
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Rotary combustion apparatus
- Patent number 7,942,657
- Issue date May 17, 2011
- David DuSell Gray
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...

Patents Applicationslast 30 patents

Information Patent Application
ROTARY COMBUSTION APPARATUS
- Publication number 20110271929
- Publication date Nov 10, 2011
- David DuSell Gray
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Application
ROTARY COMBUSTION APPARATUS
- Publication number 20070160487
- Publication date Jul 12, 2007
- David DuSell Gray
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES