Issued Patents 2019
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10342402 | Extraction cleaner | Kenneth M. Lenkiewicz | 2019-07-09 |
| 10188252 | Surface cleaning apparatus | David M. Miller, Michael D. Graham, YunMing Huang, Chiu Yeung Lee | 2019-01-29 |