Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9724764 | Spade bit having reamer feature | Hagen W. Dost | 2017-08-08 |
| 8366357 | Spade bit having reamer feature | Hagen W. Dost | 2013-02-05 |
| 8262325 | Spade bit having threaded conical tip portion | Hagen W. Dost, Patrick M. McAuliffe, Creighton Wade Nachtigall, Kenneth C. Osberg | 2012-09-11 |
| 7887269 | Spade bit with improved cutting geometry | Hagen W. Dost | 2011-02-15 |
| D602511 | Bit | Hagen W. Dost | 2009-10-20 |