Issued Patents All Time
Showing 25 most recent of 30 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10668899 | Transportation vacuum assembly | Douglas C. Schultz, Mark J. Tomasiak, Jason Hill | 2020-06-02 |
| 9861242 | Backpack vacuum cleaner | Mark J. Tomasiak, Douglas K. Ritterling | 2018-01-09 |
| 9751504 | Transportation vacuum assembly | Douglas C. Schultz, Mark J. Tomasiak, Jason Hill | 2017-09-05 |
| D793953 | Battery | Douglas K. Ritterling | 2017-08-08 |
| D772806 | Battery | Douglas K. Ritterling | 2016-11-29 |
| 9456722 | Backpack vacuum cleaner | Mark J. Tomasiak, Douglas K. Ritterling | 2016-10-04 |
| 9282861 | Wet/dry vacuum cleaner with built-in dustpan accessory | Douglas C. Schultz, Douglas K. Ritterling | 2016-03-15 |
| D737007 | Upright vacuum cleaner | John L. Theising, Douglas K. Ritterling | 2015-08-18 |
| D726978 | Backpack vacuum | Mark J. Tomasiak, Douglas K. Ritterling | 2015-04-14 |
| D719911 | Battery charger for a vacuum appliance | David R. Lathrop, Douglas K. Ritterling | 2014-12-23 |
| 8756756 | Vacuum appliance with adjustable tool support system and method of use | John L. Theising, Douglas K. Ritterling | 2014-06-24 |
| D698433 | Air mover | Mark J. Tomasiak, Douglas K. Ritterling | 2014-01-28 |
| 8631539 | Accessory wand storage assembly for use with vacuum appliances, and vacuums using the same | Matthew A. Williams, Douglas K. Ritterling | 2014-01-21 |
| D697024 | Battery for a backpack vacuum appliance | David R. Lathrop, Douglas K. Ritterling | 2014-01-07 |
| D676205 | Combined wet/dry vacuum cleaner | John L. Theising, Douglas K. Ritterling | 2013-02-12 |
| D670046 | Combined wet/dry vacuum cleaner | John L. Theising, Douglas K. Ritterling | 2012-10-30 |
| D670048 | Combined wet/dry vacuum cleaner | John L. Theising, Douglas K. Ritterling | 2012-10-30 |
| D669646 | Combined wet/dry vacuum cleaner | John L. Theising, Douglas K. Ritterling | 2012-10-23 |
| D666369 | Combined wet/dry vacuum cleaner with integrated tool storage | Matthew A. Williams, Douglas K. Ritterling | 2012-08-28 |
| D659315 | Scraper vacuum accessory tool | Robert R. Hollis, Douglas K. Ritterling | 2012-05-08 |
| D657101 | Combined wet/dry vacuum cleaner with a detachable blower and accessory storage | Matthew A. Williams, Douglas K. Ritterling | 2012-04-03 |
| D647260 | Portable wet/dry vacuum cleaner | Robert R. Hollis, Douglas K. Ritterling | 2011-10-18 |
| D647261 | Combined wet/dry vacuum cleaner with onboard tool storage and integrated dustpan accessory | Douglas C. Schultz, Douglas K. Ritterling | 2011-10-18 |
| D634494 | Combined wet/dry vacuum cleaner | John L. Theising, Douglas K. Ritterling | 2011-03-15 |
| D618870 | Combined wet/dry vacuum cleaner with integrated wand storage | Matthew A. Williams, Douglas K. Ritterling | 2010-06-29 |