Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5322059 | Breathing mask with flow indicator for the respiration air | — | 1994-06-21 |
| 5036842 | Respirator with blower support and regeneration of the breathing filter | Carl-Ernst van der Smissen, Wolfgang Eckstein | 1991-08-06 |
| 4796619 | Lung-controlled valve for respirator masks having positive pressures inside the mask | — | 1989-01-10 |
| 4771771 | Gas mask having a protective hood | — | 1988-09-20 |
| 4734940 | Device for affixing a respiratory mask onto a protection helmet | Adrien Galet | 1988-04-05 |
| 4606339 | Control valve for a breathing mask | — | 1986-08-19 |
| 4572176 | Control for a protective mask which operates with excess internal pressure | — | 1986-02-25 |
| 4555815 | Protective helmet with releasably connected protective breathing mask | — | 1985-12-03 |
| 4553761 | Seal | Dieter Blesing, Erich Habel | 1985-11-19 |
| 4473072 | Ready use respirator | — | 1984-09-25 |