Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7192009 | Chain winch | — | 2007-03-20 |
| 5505580 | Refuse handling system | John A. Alstad | 1996-04-09 |
| 5207337 | Swing controlled crane | — | 1993-05-04 |
| 4976413 | Mechanical jacking device | — | 1990-12-11 |