Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8465000 | Electric motor actuated stop and self-closing check valve | Donald L. Bartell, JR., Joseph E. Lescovich | 2013-06-18 |
| 7249748 | Electric motor actuated stop and self-closing check valve | Donald L. Bartell, JR., Joseph E. Lescovich | 2007-07-31 |
| 6929238 | Electric motor actuated stop and self-closing check valve | Donald L. Bartell, JR., Joseph E. Lescovich | 2005-08-16 |
| 4473121 | Pressure regulating and relief valve assembly | James R. Shychick, John H. Leggett | 1984-09-25 |