Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11111116 | Winch with handheld battery powered tensioning and payout unit and method and apparatus for retrofitting manual winches | Justin Dow | 2021-09-07 |
| 9499236 | Equipment protection sleeves | — | 2016-11-22 |
| 7543800 | Single stack manual marine winch | David B. Grapes, Russell J Mayhew, Eric Konvolinka | 2009-06-09 |
| 7159852 | Manual marine winch internal gearing | Justin Dow, David B. Grapes, Richard A. Topping, Jr., Eric Konvolinka | 2007-01-09 |