Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4830336 | Arrangement in a hoisting device, especially for a derrick | — | 1989-05-16 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4830336 | Arrangement in a hoisting device, especially for a derrick | — | 1989-05-16 |