Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12344507 | Surface mounted door frame | — | 2025-07-01 |
| 11713608 | Door monitoring system | Leon Yulkowski, Edward J. Yenni | 2023-08-01 |
| 11708243 | Surface mounted door frame | — | 2023-07-25 |
| 11028630 | Door monitoring system | Leon Yulkowski, Edward J. Yenni | 2021-06-08 |
| 10858220 | Surface mounted door frame | — | 2020-12-08 |
| 10415294 | Door monitoring system | Leon Yulkowski, Edward J. Yenni | 2019-09-17 |
| 10024096 | Door monitoring system | Leon Yulkowski, Edward J. Yenni | 2018-07-17 |
| 9536357 | Door monitoring system | Leon Yulkowski, Edward J. Yenni | 2017-01-03 |
| 8907791 | Door monitoring system | Leon Yulkowski, Edward J. Yenni | 2014-12-09 |
| 8653982 | Door monitoring system | Leon Yulkowski, Edward J. Yenni | 2014-02-18 |
| 5528866 | Method and apparatus for constructing multi-rise stacked modules for human occupancy | — | 1996-06-25 |