Issued Patents All Time
Showing 1–7 of 7 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 |
| 6684968 | Roof bit body and insert assembly | Douglas E. Bise, Ted R. Massa | 2004-02-03 |
| 6595305 | Drill bit, hard member, and bit body | Curnie A. Dunn, Ted R. Massa, Douglas E. Bise, Gary Condon, Stephen T. Belsheim +1 more | 2003-07-22 |
| 6244665 | Cutting toolholder with recessed groove for cutting tool removal | Douglas E. Bise, Randall W. Oianen | 2001-06-12 |
| 6145606 | Cutting insert for roof drill bit | — | 2000-11-14 |