Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4721562 | Aerating apparatus | Wolfgang Barnscheidt, Robert Rautenbach, August Schiffermuller, Hubert Zimmermann, Jean-Pierre Lamort | 1988-01-26 |
| 4662889 | Knee joint prosthesis | Ludwig Zichner, Erhard Dorre, Peter Prussner | 1987-05-05 |
| 4375824 | Valve assembly with silencer | Hans-Gerd Rittel | 1983-03-08 |