Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8016042 | Stress distributing wellhead connector | Michael W. Spiering, Paul D. Bunch, Eric Dale Larson | 2011-09-13 |
| 7614453 | Stress distributing wellhead connector | Michael W. Spiering, Paul D. Bunch, Eric Dale Larson | 2009-11-10 |