Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6439009 | Door with a lock and a plurality of doors with corresponding locks and a method of installation of a door with a lock | Manfred Kampmann | 2002-08-27 |
| 6420970 | Emergency exit door with an emergency door opening system with a control box having an emergency door opening button and display module | Manfred Kampmann, Axel Schmidt | 2002-07-16 |