Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4880124 | Straddle crane steering system | Thomas Feider, Norbert Lenius | 1989-11-14 |
| 4861218 | Mobile boat hoist | — | 1989-08-29 |
| 4705180 | Suspended load positioning stabilizing system | Norbert Lenius, Richard A. Stearn | 1987-11-10 |
| 4531604 | Hydraulic steering synchronization system | — | 1985-07-30 |
| 4238036 | Hatch cover crane | Arnold Petersen, Norbert Lenius | 1980-12-09 |
| 4236859 | Mobile hoist | Richard A. Stearn, Norbert Lenius | 1980-12-02 |