Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5941401 | Counterweight handling system for ring supported cranes | Jeffery L. Dreger, John M. Lanning | 1999-08-24 |
| 5823279 | Carbody to crawler connection | — | 1998-10-20 |
| 4953722 | Crane and lift enhancing beam attachment with moveable counterweight | Thomas K. Becker, Terry S. Casavant, P. Ralph Helm, Michael J. Wanek, Art G Zuehlke | 1990-09-04 |
| 4729486 | Lift enhancing beam attachment with movable counterweights | David J. Pech | 1988-03-08 |