Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8431848 | Pressure switch | — | 2013-04-30 |
| 8020449 | Pressure sensor with secondary seal | Jason Weiss, William MacDonald | 2011-09-20 |
| 6644922 | Variable pitch fan | Jonathan E. McCallum, Murray Gerwing | 2003-11-11 |
| 6439850 | Variable pitch fan | Jonathan E. McCallum, Murray Gerwing | 2002-08-27 |
| 6113351 | Variable pitch fan | Jonathan E. McCallum, Murray Gerwing | 2000-09-05 |