Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6321822 | Release mechanism for industrial doors | Tom Jansen, Perry W. Knutson, Steve Lester | 2001-11-27 |
| 6148897 | Release mechanism for industrial doors | Tom Jansen, Perry W. Knutson, Steve Lester | 2000-11-21 |
| 5887385 | Release mechanism for industrial doors | Tom Jansen, Perry W. Knutson, Steve Lester | 1999-03-30 |