Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5669375 | Breathing mask | Klaus-Dieter Dahrendorf, Joachim Schlobohm, Gunter Von Kopp, Joachim W. Siegel | 1997-09-23 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5669375 | Breathing mask | Klaus-Dieter Dahrendorf, Joachim Schlobohm, Gunter Von Kopp, Joachim W. Siegel | 1997-09-23 |