Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8002054 | Roof drill bit, roof drill bit body and hard cutting insert for roof drill bit | Chad A. Swope, Douglas E. Bise, Kris Strothmann | 2011-08-23 |
| 7036890 | Core breaker for an earth strata cutting assembly | Kris Strothmann | 2006-05-02 |