Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4520999 | Combination of a hoistdrum and hoistcable for a winch | Koenraad A. de Jong | 1985-06-04 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4520999 | Combination of a hoistdrum and hoistcable for a winch | Koenraad A. de Jong | 1985-06-04 |