Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6109463 | Lifting device with counterweight | — | 2000-08-29 |
| 5934491 | Lifting device with counterweight | — | 1999-08-10 |
| 5899347 | Lifting device with counterweight | — | 1999-05-04 |
| 5884785 | Lifting device with counterweight | — | 1999-03-23 |
| 5799806 | Lifting device with counterweight | — | 1998-09-01 |
| 5743149 | Articulated telescopic boom having slide-through knuckle | — | 1998-04-28 |
| 5394959 | Scissor lift apparatus for work platforms and the like | David P. Engvall | 1995-03-07 |
| RE31400 | Self propelled and extensible boom | Rallie P. Rallis, Lyle R. Tamplin | 1983-10-04 |
| D262279 | Mobile self-powered hydraulic lift | Rallie P. Rallis, Lyle R. Tamplin | 1981-12-15 |
| D261127 | Mobile self-powered hydraulic lift | Rallie P. Rallis, Lyle R. Tamplin | 1981-10-06 |
| 4271926 | Rotatable work platform | — | 1981-06-09 |
| 4226300 | Self propelled and extensible boom lift | Rallie P. Rallis, Lyle R. Tamplin | 1980-10-07 |