Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7419143 | Apparatus and method for producing small gas bubbles in liquids | Douglas W. Lee | 2008-09-02 |
| 7278630 | Apparatus and method for producing small gas bubbles in liquids | Douglas W. Lee | 2007-10-09 |
| 7159854 | Apparatus and method for producing small gas bubbles in liquids | Douglas W. Lee | 2007-01-09 |
| 7108250 | Apparatus and method for producing small gas bubbles in liquids | Douglas W. Lee | 2006-09-19 |