Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9702250 | Power shovel hoist machinery with auxiliary weight box | Carl D. Gilmore, David T. Bienfang | 2017-07-11 |
| 9388689 | Multi-deck mining vehicle | David T. Bienfang, Carl D. Gilmore | 2016-07-12 |
| 9127435 | Power shovel hoist machinery with auxiliary weight box | David T. Bienfang, Carl D. Gilmore | 2015-09-08 |
| 8966792 | Machine having dipper actuator system | David T. Bienfang, Carl D. Gilmore | 2015-03-03 |
| 8959805 | Machine having dipper actuator system | David T. Bienfang, Carl D. Gilmore | 2015-02-24 |
| 8936232 | Interlock system | Thomas Kowalski, Mark Medenwaldt, David T. Bienfang | 2015-01-20 |
| 8935865 | Power shovel having isolated hydraulic dipper actuator | David T. Bienfang | 2015-01-20 |
| 5956915 | Tubular drill mast | James P. Piper, Carl D. Gilmore, Kenneth Hammel | 1999-09-28 |