Petit; William A.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Petit; William A..The latest application filed is for "automatic vehicle control and location system".
- Petit; William A. - Spencerport NY
- Petit; William A. - Rochester NY
| Patent | Date |
|---|---|
| Automatic vehicle control and location system Grant 5,364,047 - Petit , et al. November 15, 1 | 1994-11-15 |
| Highway crossing control system for railroads utilizing a communications link between the train locomotive and the crossing protection equipment Grant 5,098,044 - Petit , et al. March 24, 1 | 1992-03-24 |
| Automatic yard operation using a fixed block system Grant 4,994,969 - Petit February 19, 1 | 1991-02-19 |
| Railway signalling system especially for broken rail detection Grant 4,728,063 - Petit , et al. March 1, 1 | 1988-03-01 |
| Radio based railway signaling and traffic control system Grant 4,711,418 - Aver, Jr. , et al. December 8, 1 | 1987-12-08 |
| Railway track switch control apparatus Grant 4,611,775 - Petit September 16, 1 | 1986-09-16 |
| Microprocessor based track circuit for occupancy detection and bidirectional code communication Grant 4,498,650 - Smith , et al. February 12, 1 | 1985-02-12 |
| Alternating current track circuits Grant 4,065,081 - Huffman , et al. December 27, 1 | 1977-12-27 |
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