Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7798471 | Direct acting single sheave active/passive heave compensator | — | 2010-09-21 |
| 4434616 | Hydraulic winch speed control with pressure-responsive override | Randolph J. Nelson | 1984-03-06 |