Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8505742 | Perforated hexagon-hole tube support for synthetic screen separator | David Stanley Hawkins, Gregory S. Sprenger | 2013-08-13 |
| 5248414 | Filter having improved means of positive shutoff incorporating sleeve valve seat | — | 1993-09-28 |