Alvin J. Matthews

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Pittsburgh, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus for removing press fit pins
- Patent number 5,283,936
- Issue date Feb 8, 1994
- Westinghouse Air Brake Company
- James Pickles
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
Information Patent Grant
Method of reconditioning valves
- Patent number 5,249,360
- Issue date Oct 5, 1993
- Westinghouse Air Brake Company
- Wade A. Kunis
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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
Adjustable regulating device for a railway locomotive brake valve a...
- Patent number 5,211,451
- Issue date May 18, 1993
- Westinghouse Air Brake Company
- Alvin J. Matthews
- B60 - VEHICLES IN GENERAL
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
Information Patent Grant
Valve reconditioning process
- Patent number 5,129,145
- Issue date Jul 14, 1992
- Westinghouse Air Brake Company
- Alvin J. Matthews
- B60 - VEHICLES IN GENERAL