Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8230854 | Oxygen-generating breathing apparatus | Frank Krüger, Karl-Heinz Feldner | 2012-07-31 |
| 6998080 | Method for manufacturing a filter body | Gabriele Stadermann | 2006-02-14 |
| 5267558 | Chemical cartridge for respirators | Klaus Haertle, Volker Hunnebeck, Michael Schwichtenberg, Stefan Zloczysti | 1993-12-07 |