Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5706736 | Polar crane and related method | — | 1998-01-13 |
| 5507234 | Apparatus for correcting skew of a traveling crane | — | 1996-04-16 |
| 5216957 | Apparatus and method for correcting skew of a traveling crane by maximizing friction between leading skewed wheel and the rail | — | 1993-06-08 |
| 5156282 | Apparatus for correcting skew of a traveling crane | — | 1992-10-20 |
| 5119737 | Apparatus and method for driving a large traveling crane | — | 1992-06-09 |
| 5080021 | Apparatus and method for correcting skew of a traveling crane | — | 1992-01-14 |