Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6179100 | Blockable piston-cylinder unit | Rolf Mintgen, Dirk Rennecke, Andreas Ritter, Marco Gehlen | 2001-01-30 |
| 5806828 | Chair with a seat that returns to a predetermined height and angular rest position when unoccupied | Klaus Koch, Michael Hewel, Oliver Schuttler | 1998-09-15 |