Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10683704 | Drill with remotely controlled operating modes and system and method for providing the same | Fun-Den Wang | 2020-06-16 |
| 10094172 | Drill with remotely controlled operating modes and system and method for providing the same | Fun-Den Wang | 2018-10-09 |
| 9410376 | Drill with remotely controlled operating modes and system and method for providing the same | Fun-Den Wang | 2016-08-09 |
| 9371693 | Drill with remotely controlled operating modes and system and method for providing the same | Fun-Den Wang | 2016-06-21 |
| 5131491 | Descent controller | Ernest L. Stech, Richard H. Frost | 1992-07-21 |
| 5070962 | Egress and evacuation harness | — | 1991-12-10 |
| 5038888 | Descent controller | Ernest L. Stech, Richard H. Frost | 1991-08-13 |
| 4938435 | Personnel lowering device | Ernest L. Stech | 1990-07-03 |
| 4883146 | Descent control device with deadman brake | Ernest L. Stech | 1989-11-28 |
| 4431063 | Drive mechanism for drill | Michael O. Dressel, LaValle V. Brummert, John W. Bodle | 1984-02-14 |