Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8141193 | Methods and apparatus for cleaning surfaces | David E. Stafford, Jr. | 2012-03-27 |
| 7971305 | Methods and apparatus for cleaning surfaces | David E. Stafford, Jr. | 2011-07-05 |
| 7735178 | Methods and apparatus for cleaning surfaces | David E. Stafford, Jr. | 2010-06-15 |