Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4631989 | Ratchet handle for use interchangeably with socket wrenches having coupling means of different sizes | Charles Trowbridge | 1986-12-30 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4631989 | Ratchet handle for use interchangeably with socket wrenches having coupling means of different sizes | Charles Trowbridge | 1986-12-30 |