James R. Polacheck

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Wayne, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Shaft seal for a check valve
- Patent number 3,938,541
- Issue date Feb 17, 1976
- Westinghouse Electric Corporation
- James R. Polacheck
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...