Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4557391 | Method of controlling the angle of a pivotal boom with extensible sections | Robert A. Rathe | 1985-12-10 |
| 4544071 | External pendant pay-out system with anti-droop control | — | 1985-10-01 |
| 4492312 | External pendant pay-out system with anti-droop control | — | 1985-01-08 |
| 4491228 | Floating sheave type pendant pay-out system for pendant supported boom | Robert A. Rathe | 1985-01-01 |
| 4478014 | Telescopic boom with angled corner construction | Thomas J. Volkmann | 1984-10-23 |
| 4352434 | Pendant supported hydraulic extensible boom | — | 1982-10-05 |