Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6085872 | Roped hydraulic elevator | George John Thomas | 2000-07-11 |
| 6059073 | Overspeed valve for hydraulic elevator | Augusts Kiperts | 2000-05-09 |
| 5597987 | Twin post, telescoping jack hydraulic elevator system | Foad Vafaie, Martin Hughes, Charlie Thurmond, Paul Tomes | 1997-01-28 |
| 4637496 | Elevator rail system | Richard E. Atkey | 1987-01-20 |