Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8342236 | Blast hole drill bit carousel and a blast hole drill including a blast hole drill bit carousel | David T. Bienfang, Nathaniel A. Falendysz | 2013-01-01 |
| 7975760 | Tool wrench assembly | David T. Bienfang | 2011-07-12 |