Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7247181 | Cyclonic dirt separation module | Gary L. Smith, Eric R. Metzger, David E. McDowell | 2007-07-24 |
| 6810557 | Cyclone separator with vacillating debris inhibitor | David E. McDowell, Lindsay Michelle Swartz | 2004-11-02 |
| 6800140 | Extraction cleaning with optimal cleaning speed | — | 2004-10-05 |
| 6775880 | Protectant application | Gary A. Kasper, John L. Jansen, Phong Hoang Tran, Eric J. Hansen, Gabriel S. Vander Baan | 2004-08-17 |
| D467812 | Bottle | Kenneth L. Roberts | 2002-12-31 |
| 6446302 | Extraction cleaning machine with cleaning control | Gary A. Kasper, Jonathan L. Miner, David E. McDowell | 2002-09-10 |