Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7699360 | Water well casing | Roy L. Thein | 2010-04-20 |
| 7470383 | Submersible pump drop pipe and casing assembly connection and method of manufacture | Roy L. Thein | 2008-12-30 |
| 7425024 | Submersible pump drop pipe and casing assembly connection and method of manufacture | Roy L. Thein | 2008-09-16 |
| 7261326 | Submersible pump drop pipe and casing assembly connection and method of manufacture | Roy L. Thein | 2007-08-28 |
| 7249789 | Water well casing | Roy L. Thein | 2007-07-31 |
| 6666480 | Submersible pump drop pipe and casing assembly connection and method of manufacture | Roy L. Thein | 2003-12-23 |