Richard H. Gumbert

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North Huntington, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Method of cleaning valve bushings
- Patent number 5,246,502
- Issue date Sep 21, 1993
- Westinghouse Air Brake Company
- Alvin J. Matthews
- B08 - CLEANING
Information Patent Grant
Valve bushing cleaning device and method of cleaning valve bushings
- Patent number 5,146,939
- Issue date Sep 15, 1992
- Westinghouse Air Brake Company
- Alvin J. Matthews
- B08 - CLEANING