William A. Petit

Person

Claremont, CA, US

People

Patents Grantslast 30 patents

Information Patent Grant
Non-vital turn off of vital output circuit
- Patent number 5,671,348
- Issue date Sep 23, 1997
- General Railway Signal Corporation
- William A. Petit
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Automatic vehicle control and location system
- Patent number 5,364,047
- Issue date Nov 15, 1994
- General Railway Signal Corporation
- William A. Petit
- B61 - RAILWAYS
Information Patent Grant
Pulse code railway signalling system
- Patent number 5,271,584
- Issue date Dec 21, 1993
- General Railway Signal
- Robert I. Hochman
- B61 - RAILWAYS
Information Patent Grant
Highway crossing control system for railroads utilizing a communica...
- Patent number 5,098,044
- Issue date Mar 24, 1992
- General Railway Signal Corporation
- William A. Petit
- B61 - RAILWAYS
Information Patent Grant
Highway crossing control system for railroads utilizing a communica...
- Patent number 5,092,544
- Issue date Mar 3, 1992
- General Railway Signal Corp.
- William A. Petit
- B61 - RAILWAYS
Information Patent Grant
Automatic yard operation using a fixed block system
- Patent number 4,994,969
- Issue date Feb 19, 1991
- General Signal Corporation
- William A. Petit
- B61 - RAILWAYS
Information Patent Grant
Railway signalling system especially for broken rail detection
- Patent number 4,728,063
- Issue date Mar 1, 1988
- General Signal Corp.
- William A. Petit
- B61 - RAILWAYS
Information Patent Grant
Radio based railway signaling and traffic control system
- Patent number 4,711,418
- Issue date Dec 8, 1987
- General Signal Corporation
- John H. Aver
- B61 - RAILWAYS
Information Patent Grant
Railway track switch control apparatus
- Patent number 4,611,775
- Issue date Sep 16, 1986
- General Signal Corp.
- William A. Petit
- B61 - RAILWAYS
Information Patent Grant
Microprocessor based track circuit for occupancy detection and bidi...
- Patent number 4,498,650
- Issue date Feb 12, 1985
- General Signal Corporation
- Barry L. Smith
- B61 - RAILWAYS
Information Patent Grant
Non contact isolated current detector
- Patent number 4,451,018
- Issue date May 29, 1984
- General Signal Corporation
- Barry L. Smith
- B61 - RAILWAYS
Information Patent Grant
Alternating current track circuits
- Patent number 4,065,081
- Issue date Dec 27, 1977
- General Signal Corporation
- Jerry P. Huffman
- B61 - RAILWAYS

William A. Petit

Person

Patents Grantslast 30 patents

Non-vital turn off of vital output circuit

Automatic vehicle control and location system

Pulse code railway signalling system

Highway crossing control system for railroads utilizing a communica...

Highway crossing control system for railroads utilizing a communica...

Automatic yard operation using a fixed block system

Railway signalling system especially for broken rail detection

Radio based railway signaling and traffic control system

Railway track switch control apparatus

Microprocessor based track circuit for occupancy detection and bidi...

Non contact isolated current detector

Alternating current track circuits