Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5667352 | Locking system for extension members on portable lifts | Richard M. Curtin, Paul Smith | 1997-09-16 |
| 5645142 | Wedge braking system for multi-stage lifts | Richard M. Curtin, Paul Smith | 1997-07-08 |