Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4919159 | Method and apparatus for cleaning the interior surfaces of buildings, and especially ceilings of office buildings | Russell C. Ward | 1990-04-24 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4919159 | Method and apparatus for cleaning the interior surfaces of buildings, and especially ceilings of office buildings | Russell C. Ward | 1990-04-24 |