Anthony G. Ehrlich

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Pittsburgh, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Railway cab signal
- Patent number 5,330,134
- Issue date Jul 19, 1994
- Union Switch & Signal Inc.
- Anthony G. Ehrlich
- B61 - RAILWAYS
Information Patent Grant
Railway cab signal transmitter
- Patent number 5,263,669
- Issue date Nov 23, 1993
- Union Switch & Signal Inc.
- Anthony G. Ehrlich
- B61 - RAILWAYS
Information Patent Grant
Single-element coded alternating current railway track circuit havi...
- Patent number 5,219,426
- Issue date Jun 15, 1993
- Union Switch & Signal Inc.
- Anthony G. Ehrlich
- B61 - RAILWAYS