Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10087053 | Manual marine winch with safety knockout override preventing release of winch tension without the handle in the stowed position | Donald Joseph Sluka | 2018-10-02 |
| 9004456 | Manual marine winch with safety knockout override preventing release of winch tension without the handle in the stowed position | Donald Joseph Sluka | 2015-04-14 |
| 7159852 | Manual marine winch internal gearing | Justin Dow, Erik Arlet, David B. Grapes, Eric Konvolinka | 2007-01-09 |
| 6726182 | Manual winch with dual locking dogs | David B. Grapes | 2004-04-27 |
| 6572083 | Winch with safe load release system | David B. Grapes, Russell J Mayhew | 2003-06-03 |