Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9328837 | Double seat valve with isolated vent chambers | Keith Burns | 2016-05-03 |
| 7303000 | Mounting system and method for scraped surface heat exchanger blades | Curt Hagen, Benjamin Hardy | 2007-12-04 |
| 7178807 | Shaft mounted seal device and method for a scraped surface heat exchanger | Benjamin Hardy, Curt Hagen | 2007-02-20 |
| 6966757 | Scraper blade attachment apparatus and method with split pin | Benjamin Hardy | 2005-11-22 |
| 6783342 | Method and apparatus for timing rotors in a rotary lobe pump | Curt Hagen | 2004-08-31 |