John F. Helm

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Overland Park, KS, US

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Patents Grantslast 30 patents

Information Patent Grant
One cycle internal combustion engine
- Patent number 6,796,127
- Issue date Sep 28, 2004
- John F. Helm
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...

Patents Applicationslast 30 patents

Information Patent Application
One cycle internal combustion engine
- Publication number 20040040305
- Publication date Mar 4, 2004
- John F. Helm
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES