Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5725233 | Portable tongue for trailers | John M. Matkin | 1998-03-10 |
| 5465993 | Portable tongue for trailers | John M. Matkin | 1995-11-14 |
| 5348333 | Portable tongue for trailers | — | 1994-09-20 |