Patents per Year
Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 7575617 | Integral filter and grill assembly for a cold air return | — | 2009-08-18 | |
| 7237944 | Scraped heat exchanger having blade with protective rest nub | Benjamin Hardy, Curt Hagen | 2007-07-03 | $20,443,000 |
| 6634685 | Electronically-operable door strike with guard clip, springless solenoid and face plate | William Lee Herron, Wolfgang Jaffe, Carlo Frussinetty | 2003-10-21 | |
| 5570555 | Double batted roof structure | David Knutson, Mark Schoen | 1996-11-05 |