Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5669587 | Point detection and indication with latch out means | George E. Ludwick, George A. Bonner, Mark Hager, Charles M. Eggebrecht, Allen Baughman +1 more | 1997-09-23 |
| 5590857 | Trailing device for a railroad switch layout | Harry A. Albrecht | 1997-01-07 |