James D. Ries

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Holland, MI, US

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Patents Grantslast 30 patents

Information Patent Grant
Variable-displacement piston-cylinder device
- Patent number 7,779,627
- Issue date Aug 24, 2010
- James D. Ries
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES

Patents Applicationslast 30 patents

Information Patent Application
VARIABLE-DISPLACEMENT PISTON-CYLINDER DEVICE
- Publication number 20100192764
- Publication date Aug 5, 2010
- James D. Ries
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES