Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4688688 | Jib crane arrangement having a rotatable mast | Robert L. McNelis, Burt H. Wallentim | 1987-08-25 |
| 4511048 | Jib crane system having a rotatable mast | Robert L. McNelis, Burt H. Wallentin | 1985-04-16 |