Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6116379 | Ladder stabilizing cross brace | — | 2000-09-12 |
| 5820503 | Tensioner for traction means with predefined tensioning displacement | Klaus Bruchner, Ralf Kaufmann, Manfred Bonkowski | 1998-10-13 |