Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12297684 | Window operator | Frank W. Campbell | 2025-05-13 |
| 11002057 | Window operating system | Frank W. Campbell | 2021-05-11 |
| 8434265 | Rack gear operator | Frank W. Campbell | 2013-05-07 |
| 8365470 | Lead screw operator | Frank W. Campbell | 2013-02-05 |