Issued Patents 2005
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6945340 | Roof bit and insert assembly | Douglas E. Bise, Ted R. Massa | 2005-09-20 |
| 6886645 | Liquid seal for wet roof bit | Douglas E. Bise | 2005-05-03 |
| 6860344 | Monolithic roof cutting bit insert | Douglas E. Bise | 2005-03-01 |