Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6146434 | Cyclonic dirt cup assembly | Adam C. Scalfani, Douglas E. Gerber, Raymond L. Lawter, Daniel R. Miller | 2000-11-14 |
| 5867864 | Hand held turbine powered extractor nozzle | Daniel R. Miller, Douglas E. Gerber, Douglas C. Barker | 1999-02-09 |
| 5713103 | Dirt cup cleaner with nose conversion | Lynn A. Frederick | 1998-02-03 |
| D292336 | Wet/dry vacuum cleaner | Milton G. Kieft, Robert C. Shorthill | 1987-10-13 |