Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5001948 | Screwdriver blade with curved tip | Steven C. Simpson | 1991-03-26 |
| 4878406 | Screwdriver blade | Steven C. Simpson | 1989-11-07 |
| 4509932 | Double cardan universal joint with improved centering means | — | 1985-04-09 |
| 4310206 | Universal joint with lubricating means | — | 1982-01-12 |
| D262218 | Forming tool | — | 1981-12-08 |
| D258443 | Forming tool | — | 1981-03-03 |
| 4207755 | Universal joint for transmitting torque from one shaft to another | — | 1980-06-17 |
| 4187699 | Universal joint for connecting shafts | — | 1980-02-12 |