Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10323759 | Check valve control unit | Douglas J. Tanner, Forrest Halvorson, David G. Hildebrandt, Dennis Jay Smith, Jr., Timothy M. O'Shea | 2019-06-18 |
| 8465000 | Electric motor actuated stop and self-closing check valve | Joseph E. Lescovich, William J. Nicholl | 2013-06-18 |
| 7249748 | Electric motor actuated stop and self-closing check valve | Joseph E. Lescovich, William J. Nicholl | 2007-07-31 |
| 6929238 | Electric motor actuated stop and self-closing check valve | Joseph E. Lescovich, William J. Nicholl | 2005-08-16 |