Geiger; Willard L.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Geiger; Willard L..The latest application filed is for "train approach detector".
- Geiger; Willard L. - Chagrin Falls OH
| Patent | Date |
|---|---|
| Train approach detector Grant 4,365,777 - Geiger December 28, 1 | 1982-12-28 |
| Railway signal system Grant 3,987,989 - Geiger October 26, 1 | 1976-10-26 |
| Railroad motion detecting and signalling system with repeater receiver Grant 3,974,991 - Geiger August 17, 1 | 1976-08-17 |
| Railway Signal System With Speed Determined Movement Detector Grant 3,850,390 - Geiger November 26, 1 | 1974-11-26 |
| Pulse Coded Railway Signal System Grant 3,740,550 - Geiger June 19, 1 | 1973-06-19 |
| Railway Signal System Grant 3,706,098 - Geiger December 12, 1 | 1972-12-12 |
| Metal Impurity Detector For Tubular Conveyor System Grant 3,665,298 - Geiger May 23, 1 | 1972-05-23 |
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