Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9140098 | Downhole isolation and depressurization tool | Donald Getzlaf, Marty Stromquist, John Ravensbergen, Lyle Laun | 2015-09-22 |
| 8931559 | Downhole isolation and depressurization tool | Donald Getzlaf, Marty Stromquist, John Ravensbergen, Lyle Laun | 2015-01-13 |
| 6474419 | Packer with equalizing valve and method of use | Gary Maier, Marty Stromquist | 2002-11-05 |