Christopher K. Duffey

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Clackamas, OR, US

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Patents Grantslast 30 patents

Information Patent Grant
Variable speed synchronous generator
- Patent number 8,125,095
- Issue date Feb 28, 2012
- Christopher K. Duffey
- F03 - MACHINES OR ENGINES FOR LIQUIDS WIND, SPRING WEIGHT AND MISCELLANEOUS M...
Information Patent Grant
System for generating constant speed output from variable speed input
- Patent number 7,851,933
- Issue date Dec 14, 2010
- Christopher K. Duffey
- F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF...

Patents Applicationslast 30 patents

Information Patent Application
Variable Speed Synchronous Generator
- Publication number 20090315329
- Publication date Dec 24, 2009
- Christopher K. Duffey
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Application
SYSTEM FOR GENERATING CONSTANT SPEED OUTPUT FROM VARIABLE SPEED INPUT
- Publication number 20080223684
- Publication date Sep 18, 2008
- Christopher K. Duffey
- F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF...