Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11542909 | Automatic control valve with micro-hydro generator | — | 2023-01-03 |
| 11346483 | Tank tee assembly | Ian Hargraves | 2022-05-31 |
| 10883337 | Drain-back valve and method | — | 2021-01-05 |
| 10781662 | Drain-back check valve assembly | — | 2020-09-22 |
| 10738901 | Check valve | — | 2020-08-11 |
| 9879791 | Swing check valve | — | 2018-01-30 |
| 9611948 | Valve assembly | — | 2017-04-04 |
| 9163737 | Check valve for use with pumps controlled by variable frequency drives | — | 2015-10-20 |
| 9081390 | Back pressure valve | — | 2015-07-14 |
| 9032992 | Check valve | — | 2015-05-19 |
| 8978696 | Check valve | — | 2015-03-17 |
| D718429 | Poppet | — | 2014-11-25 |
| 4312492 | Arrangement in slipforms | — | 1982-01-26 |
| 4212569 | Tubular drill tool | Bert E. Bergstrom | 1980-07-15 |