Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4863044 | Latticework construction for cranes | Walter H. Trask | 1989-09-05 |
| 4508232 | Counterbalanced crane structure | — | 1985-04-02 |
| 4349115 | Crane | — | 1982-09-14 |
| 4243148 | Counterbalanced tower crane | — | 1981-01-06 |