Issued Patents 2022
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11299922 | Modular door operating linkage system and related method for connecting a door to a driver | Joseph P. Madden | 2022-04-12 |
| 11299926 | Drive mechanism for imparting movements to a door | Joseph P. Madden | 2022-04-12 |
| 11225819 | Door operating system | Joseph P. Madden | 2022-01-18 |