Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4911579 | Swivel arrangement for connecting a boring or reaming tool to a cable | Douglas P. Kelley, Kenneth E. Fender | 1990-03-27 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4911579 | Swivel arrangement for connecting a boring or reaming tool to a cable | Douglas P. Kelley, Kenneth E. Fender | 1990-03-27 |