Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6253423 | Fixing element | Elvira Friedrich, Otto Demel, Andreas Detloff | 2001-07-03 |
| 5970586 | Component for fastening a profiled seal to the edge of a metal sheet | Otto Demel, Ralf Sehr, Manfred Michels | 1999-10-26 |