Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6456023 | Method and apparatus to control a variable speed motor | Dirk van der Duim, Mark A. Brattoli | 2002-09-24 |
| 6423118 | Methods and systems for controlling air filtration systems | Brian L. Beifus, William R. Archer | 2002-07-23 |