Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5797480 | Hanger bearing | Donald L. Gaddis, Roy Gaddis | 1998-08-25 |
| 5690466 | Slope plates for particulate material truck box | Donald L. Gaddis | 1997-11-25 |
| 5505583 | Slope plates for particulate material truck box | Donald L. Gaddis | 1996-04-09 |