Carl D. Hefley

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Salome, AZ, US

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Patents Grantslast 30 patents

Information Patent Grant
Variable displacement/compression engine
- Patent number 7,270,092
- Issue date Sep 18, 2007
- Carl D. Hefley
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC

Patents Applicationslast 30 patents

Information Patent Application
Variable Displacement/Compression Engine
- Publication number 20070245992
- Publication date Oct 25, 2007
- Carl D. Hefley
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Application
VARIABLE DISPLACEMENT/COMPRESSION ENGINE
- Publication number 20070034186
- Publication date Feb 15, 2007
- Carl D. Hefley
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS