Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6139043 | One-piece pintle hitch | Thomas Gries | 2000-10-31 |
| 5788333 | Controller for mechanical equipment | Thomas Gries | 1998-08-04 |
| 5620218 | Apparatus for affixing a towing device to a vehicle | Thomas Gries | 1997-04-15 |