Steve Johnson

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Portland, OR, US

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Patents Grantslast 30 patents

Information Patent Grant
Positive displacement rotary device and method of use
- Patent number 7,171,941
- Issue date Feb 6, 2007
- Steve Johnson
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...

Patents Applicationslast 30 patents

Information Patent Application
Positive displacement rotary device and method of use
- Publication number 20050166889
- Publication date Aug 4, 2005
- Steve Johnson
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES