James R. Spencer

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Kanawha, IA, US

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Patents Grantslast 30 patents

Information Patent Grant
Seat faced engine valves and method of making seat faced engine valves
- Patent number 6,385,847
- Issue date May 14, 2002
- Eaton Corporation
- Jay M. Larson
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES