Issued Patents 2022
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11365605 | Locking backpressure valve | Larry T. Palmer, Erik Vilhelm Nordenstam, Eric Anders Erickson, Scott Bigrigg | 2022-06-21 |
| 11359460 | Locking backpressure valve | Larry T. Palmer, Erik Vilhelm Nordenstam, Eric Anders Erickson, Scott Bigrigg | 2022-06-14 |
| 11230906 | Locking backpressure valve | Larry T. Palmer, Steve Wilson | 2022-01-25 |
| 11215026 | Locking backpressure valve | Larry T. Palmer, Erik Vilhelm Nordenstam, Eric Anders Erickson, Scott Bigrigg | 2022-01-04 |
| 11215031 | Locking backpressure valve with shiftable valve sleeve | Larry T. Palmer, Steve Wilson | 2022-01-04 |
| 11215028 | Locking backpressure valve | Larry T. Palmer, Erik Vilhelm Nordenstam, Eric Anders Erickson, Scott Bigrigg | 2022-01-04 |
| 11215030 | Locking backpressure valve with shiftable valve seat | Larry T. Palmer, Steve Wilson | 2022-01-04 |