Issued Patents All Time
Showing 26–33 of 33 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5733351 | Two stage vacuum cleaner filter | David R. Hult, Donald M. Kolehmainen | 1998-03-31 |
| D392780 | Vacuum cleaner nozzle | Stuart V. Holsten, David R. Hult | 1998-03-24 |
| 5706550 | Floor brush nozzle assembly | Stuart V. Holsten | 1998-01-13 |
| 5611107 | Latching mechanisms for wet/dry utility vacuum cleaner with detachable blower | Mark J. Tomasiak, Stuart V. Holsten | 1997-03-18 |
| 5606769 | Wet/dry utility vacuum cleaner with detachable blower | Mark J. Tomasiak, Stuart V. Holsten | 1997-03-04 |
| D362091 | Combined wet/dry vacuum cleaner with detachable blower | Mark J. Tomasiak | 1995-09-05 |
| 4888849 | Wheeled hand cart for wet/dry utility vacuum cleaner | David R. Hult | 1989-12-26 |
| 4837899 | Hose clip for flexible hose | — | 1989-06-13 |