Issued Patents 2016
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9510718 | Wet/dry vacuum cleaner filter for wet material collection | Douglas C. Schultz, Matthew A. Williams | 2016-12-06 |
| 9456722 | Backpack vacuum cleaner | Douglas K. Ritterling, Shane Glasgow | 2016-10-04 |