Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4610559 | Shield for universal joint | Roger D. Mayhew | 1986-09-09 |
| 4605332 | Universal joint guard | Roger D. Mayhew | 1986-08-12 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4610559 | Shield for universal joint | Roger D. Mayhew | 1986-09-09 |
| 4605332 | Universal joint guard | Roger D. Mayhew | 1986-08-12 |