Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4679508 | Transit vehicle door control apparatus | Mark Fruehan, Jeffrey A. Fennig | 1987-07-14 |
| 4278900 | Fail-safe pulse providing apparatus | Thomas C. Matty | 1981-07-14 |
| 4269377 | Door control for train vehicles | Donald L. Rush | 1981-05-26 |