Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5613488 | Chemical oxygen generator breathing device with the exhalation bag within the inhalation bag | Volker Hunnebeck | 1997-03-25 |
| 5267558 | Chemical cartridge for respirators | Klaus Haertle, Volker Hunnebeck, Karl-Heinz Kohricht, Stefan Zloczysti | 1993-12-07 |