John David Kirk

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Fond du lac, WI, US

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Patents Grantslast 30 patents

Information Patent Grant
Piston with two pivot bearings and twin crankshaft piston engine
- Patent number 8,360,028
- Issue date Jan 29, 2013
- Neander Motors
- Helmut Betzmeir
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS

Patents Applicationslast 30 patents

Information Patent Application
Piston with two pivot bearings and twin crankshaft piston engine
- Publication number 20120055443
- Publication date Mar 8, 2012
- Neander Motors AG
- Helmut Betzmeir
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS