Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9181996 | Device for reducing rod string backspin in progressive cavity pump | Tracy Earl Klotz, Dwayne Darryl Commandeur | 2015-11-10 |
| 8103802 | Portable data system | Cheng-Wen Yang, Lavetta Willis | 2012-01-24 |