Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11199041 | Concealed electrical door operator | Leon Yulkowski, Gerard Edwards | 2021-12-14 |
| 10221609 | Concealed electrical door operator | Leon Yulkowski, Gerard Edwards | 2019-03-05 |
| 8844200 | Electrical door operator | Leon Yulkowski, Gerard Edwards | 2014-09-30 |
| 8261491 | Concealed electrical door operator | Leon Yulkowski, Gerard Edwards | 2012-09-11 |