Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11174683 | Tapered joint for securing cone arm in hole opener | Christopher R. Irgens, Andrew Houdek | 2021-11-16 |
| 7845437 | Hole opener assembly and a cone arm forming a part thereof | James Schulz | 2010-12-07 |