Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5363771 | Motorized portable system for aiding persons in ascending or descending stairways | Robert C. Warren, Glenn E. Herz | 1994-11-15 |
| 5269227 | Motorized portable system and method for aiding persons in ascending or descending stairways | Robert C. Warren, Glenn E. Herz | 1993-12-14 |
| 4987935 | BI-directional tree saw | Sean P. Corcoran, Thomas E. Dixon, Emory D. Hungerford, Mark P. Mallory | 1991-01-29 |
| 4717191 | Swivel head for grapple | — | 1988-01-05 |
| 4708575 | Forklift truck push-pull slipsheet handler for facilitating conversion of truck between slipsheet handling and pallet handling capabilities | Richard D. Seaberg | 1987-11-24 |
| 4624620 | Forklift truck push-pull slipsheet handler for facilitating conversion of truck between slipsheet handling and pallet handling capabilities | Richard D. Seaberg | 1986-11-25 |
| 4482286 | Forklift truck push-pull slipsheet handler for facilitating conversion of truck between slipsheet handling and pallet handling capabilities | Richard D. Seaberg | 1984-11-13 |
| 4227850 | Lift truck load clamp for handling paper rolls | Harry F. Weinert | 1980-10-14 |
| 4191092 | Telescopic ram | — | 1980-03-04 |
| 4191276 | High-visibility two-stage mast assembly for lift trucks | Harlan D. Olson | 1980-03-04 |