Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8011639 | Poppet type flow control valve | — | 2011-09-06 |
| 7517376 | Reverse pulse cleaning of filter elements | — | 2009-04-14 |
| 7419132 | Bladder valve | — | 2008-09-02 |
| 6820855 | Air flow control valve | Patrick Alexander Heller | 2004-11-23 |