Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7306254 | Trailer kingpin locking device | Daniel J. Maffey | 2007-12-11 |
| 4697444 | Security device for trailer | — | 1987-10-06 |
| 4553415 | Trailer kingpin locking device with protected locking bar aperture | — | 1985-11-19 |