Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4364384 | Excess pressure respirator with pressurized breathing gas shutoff | Ernst Warncke | 1982-12-21 |
| 4350115 | Warning signal device for respirators | — | 1982-09-21 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4364384 | Excess pressure respirator with pressurized breathing gas shutoff | Ernst Warncke | 1982-12-21 |
| 4350115 | Warning signal device for respirators | — | 1982-09-21 |