Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4423723 | Closed cycle respirator with emergency oxygen supply | Hans Matthiessen, Ernst Warncke, Adalbert Pasternack | 1984-01-03 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4423723 | Closed cycle respirator with emergency oxygen supply | Hans Matthiessen, Ernst Warncke, Adalbert Pasternack | 1984-01-03 |