Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4657109 | Attachment jib for cranes | — | 1987-04-14 |
| 4569454 | Attachment jib for cranes | — | 1986-02-11 |
| 4561552 | Attachment jib for cranes | — | 1985-12-31 |
| 4493426 | Attachment jib for cranes | — | 1985-01-15 |
| 4473214 | Luffing jib for construction crane | Reginald P. Whittingham | 1984-09-25 |
| 4432691 | Pipe manipulator | — | 1984-02-21 |
| 4383616 | Luffing jib for construction crane | Reginald P. Whittingham | 1983-05-17 |
| 4327533 | Crane boom extending, retracting and cooperative latching arrangement | — | 1982-05-04 |