Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6565046 | Method of detecting obstacles on railroad lines | — | 2003-05-20 |
| 5629509 | Axle counter with variable threshold setting | — | 1997-05-13 |
| 4787581 | Train detection system operating in accordance with the axle-counting principle | Karl U. Dobler | 1988-11-29 |
| 4763267 | System for indicating track sections in an interlocking area as occupied or unoccupied | Alan C. Knight | 1988-08-09 |
| 4616312 | 2-out-of-3 Selecting facility in a 3-computer system | — | 1986-10-07 |
| 4550444 | Facility for intermittent transmission of information between guideway wayside equipment and vehicles moving along the guideway | — | 1985-10-29 |
| 4469298 | Axle sensor | — | 1984-09-04 |