Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10820761 | Compact automated window washing apparatus | Michael R. Lange, Jim Berres | 2020-11-03 |
| 9681784 | Compact automated window washing apparatus | Michael R. Lange, Jim Berres | 2017-06-20 |