Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D445890 | Duct assembly with connecting stations | Michael Peterson | 2001-07-31 |
| D443925 | Duct assembly | Michael Peterson | 2001-06-19 |
| D436163 | Duct cover | Michael Peterson | 2001-01-09 |
| 5139675 | Filtration cleaning system | Edward R. Arnold | 1992-08-18 |