Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8042576 | Mechanical clean-out test plug | Richard Larson | 2011-10-25 |
| 7597118 | Pneumatic pressure relief test plug | Richard Larson | 2009-10-06 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8042576 | Mechanical clean-out test plug | Richard Larson | 2011-10-25 |
| 7597118 | Pneumatic pressure relief test plug | Richard Larson | 2009-10-06 |