Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7607517 | Door coupler and locking device | Franz Josef Karner, Franz Mittermayr | 2009-10-27 |
| 7252179 | Elevator-door latching and opening device | — | 2007-08-07 |
| 6164417 | Procedure for closing an elevator landing door, and a door coupler | — | 2000-12-26 |
| 5950766 | Procedure for closing an elevator landing door, and a door coupler | — | 1999-09-14 |