Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5131491 | Descent controller | Horace M. Varner, Richard H. Frost | 1992-07-21 |
| 5038888 | Descent controller | Horace M. Varner, Richard H. Frost | 1991-08-13 |
| 4938435 | Personnel lowering device | Horace M. Varner | 1990-07-03 |
| 4883146 | Descent control device with deadman brake | Horace M. Varner | 1989-11-28 |