Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5450844 | Locking device for the container of a gas mask and breathing equipment | Gunther Kolbe, Hasso Weinmann, Wolfgang Drews | 1995-09-19 |
| 5291881 | Air cleaning cartridge for a gas mask and breathing equipment with an insert | Wolfgang Drews, Gunther Kolbe, Hasso Weinmann | 1994-03-08 |