Issued Patents All Time
Showing 26–38 of 38 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4300547 | Respirator having means for cooling inhalation air | — | 1981-11-17 |
| 4294244 | Respirator with a cooling device | — | 1981-10-13 |
| 4292967 | Respirator having oxygen delivering chemical cartridge | — | 1981-10-06 |
| 4287887 | Oxygen respirator container for an oxygen releasing chemical cartridge | Claus-Dieter Hinz | 1981-09-08 |
| 4286439 | Suit for protecting a person's body from heat and gas | — | 1981-09-01 |
| 4275723 | Warning device for breathing apparatus having a pressure gas supply | Ernst Warncke | 1981-06-30 |
| 4253328 | Device for enclosing a person's head to test a breathing mask | — | 1981-03-03 |
| 4249473 | Warning signal producing device for protective breathing apparatus | Ernst Warncke | 1981-02-10 |
| 4246864 | Device for indicating airtightness | — | 1981-01-27 |
| 4213453 | Breathing device having oxygen donor chemical cartridge | Ernst Warncke | 1980-07-22 |
| 4200092 | Respirator having an oxygen-releasing chemical cartridge | Ernst Warncke | 1980-04-29 |
| 4188947 | Breathing device having a coolant chamber | — | 1980-02-19 |
| 4187843 | Respirator having an oxygen-releasing chemical cartridge and means for attaching an additional cartridge | Ernst Warncke | 1980-02-12 |