John Sharkey

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Elgin, IL, US

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus and methods for providing relatively constant warning tim...
- Patent number 7,575,202
- Issue date Aug 18, 2009
- Safetran Systems Corporation
- John T. Sharkey
- B61 - RAILWAYS
Information Patent Grant
Highway-rail grade crossing controller with out of service mode
- Patent number 7,441,727
- Issue date Oct 28, 2008
- Safetran Systems Corporation
- John T. Sharkey
- B61 - RAILWAYS

Patents Applicationslast 30 patents

Information Patent Application
Apparatus, methods and communication systems for providing relative...
- Publication number 20070084974
- Publication date Apr 19, 2007
- Safetran Systems Corporation
- John T. Sharkey
- B61 - RAILWAYS
Information Patent Application
Highway-rail grade crossing controller with out of service mode
- Publication number 20060261219
- Publication date Nov 23, 2006
- Safetran Systems Corporation
- John T. Sharkey
- B61 - RAILWAYS
Information Patent Application
Solid state crossing controller and related methods
- Publication number 20040201486
- Publication date Oct 14, 2004
- Thomas Knowles
- B61 - RAILWAYS