Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6827160 | Downhole mud motor | Joseph L. Ficken, Daniel J. Richards | 2004-12-07 |
| 6749030 | Integrated transmitter surveying while boring entrenching powering device for the continuation of a guided bore hole | Joseph L. Ficken, Daniel J. Richards | 2004-06-15 |