Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5852897 | Door drive | — | 1998-12-29 |
| 5625175 | Method and apparatus for controlling the movement of elevator car doors | Norbert Gutknecht | 1997-04-29 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5852897 | Door drive | — | 1998-12-29 |
| 5625175 | Method and apparatus for controlling the movement of elevator car doors | Norbert Gutknecht | 1997-04-29 |