Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8562704 | Integral vacuum fan housing | Larry Wydra | 2013-10-22 |
| 8099828 | External filter chamber | Karl Hansen | 2012-01-24 |
| 7896936 | Filter cleaning apparatus | Richard W. Wellens, Michael T. Basham | 2011-03-01 |