Electric control of the setting of signals

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Patents Grantslast 30 patents

Information Patent Grant
Solar powered cell network switch point indicator system
- Patent number 11,130,508
- Issue date Sep 28, 2021
- RailSwitchNet LLC
- Selden Houghton
- B61 - RAILWAYS
Information Patent Grant
Lamp driver card to control lighting of a lamp load or a LED on a w...
- Patent number 10,349,503
- Issue date Jul 9, 2019
- SIEMENS MOBILITY, INC.
- Brian Joseph Hogan
- B61 - RAILWAYS
Information Patent Grant
Facility for monitoring the operation of a signal lamp
- Patent number 4,808,982
- Issue date Feb 28, 1989
- Alcatel N.V.
- Hans J. Knapp
- B61 - RAILWAYS
Information Patent Grant
Track circuit
- Patent number 3,951,364
- Issue date Apr 20, 1976
- General Signal Corporation
- Henry C. Sibley
- B61 - RAILWAYS
Information Patent Grant
2786939
- Patent number 2,786,939
- Issue date Mar 26, 1957
- B61 - RAILWAYS
Information Patent Grant
2639370
- Patent number 2,639,370
- Issue date May 19, 1953
- B61 - RAILWAYS
Information Patent Grant
2042662
- Patent number 2,042,662
- Issue date Jun 2, 1936
- B61 - RAILWAYS
Information Patent Grant
1502913
- Patent number 1,502,913
- Issue date Jul 29, 1924
- B61 - RAILWAYS