Phillip Merrifield

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Independence, KY, US

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Patents Grantslast 30 patents

Information Patent Grant
System, method, and apparatus to restrict movement of railway guard...
- Patent number 9,988,768
- Issue date Jun 5, 2018
- Progress Rail Services Corporation
- Brian F. Weaver
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information Patent Grant
Double point derail switch
- Patent number 9,932,054
- Issue date Apr 3, 2018
- Progress Rail Services Corporation
- Brian Weaver
- B61 - RAILWAYS

Patents Applicationslast 30 patents

Information Patent Application
SYSTEM, METHOD, AND APPARATUS TO RESTRICT MOVEMENT OF RAILWAY GUARD...
- Publication number 20180030661
- Publication date Feb 1, 2018
- Progress Rail Services Corporation
- Brian F. WEAVER
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information Patent Application
Double Point Derail Switch
- Publication number 20170240190
- Publication date Aug 24, 2017
- Progress Rail Services Corporation
- Brian Weaver
- B61 - RAILWAYS