Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7503091 | Automatic window cleaning apparatus | Clarence A. White, Jr. | 2009-03-17 |
| 4748748 | Method and apparatus for measuring height variations on a floor surface | — | 1988-06-07 |
| 4689892 | Apparatus and method of measuring surface heights | — | 1987-09-01 |