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Anthony G. Ehrlich — 3 Patents

USUnion Switch & Signal: 3 patents #12 of 78Top 20%

Pittsburgh, PA: #2,489 of 7,570 inventorsTop 35%

Pennsylvania: #23,606 of 74,527 inventorsTop 35%

Overall (All Time): #1,655,063 of 4,157,543Top 40%

3 Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #	Title	Co-Inventors	Date
5330134	Railway cab signal	—	1994-07-19
5263669	Railway cab signal transmitter	—	1993-11-23
5219426	Single-element coded alternating current railway track circuit having double-element, phase-selective capability	—	1993-06-15