Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5625902 | Protective hood made of an elastic material | Hartmut Kintzel | 1997-05-06 |
| 5601078 | Breathing apparatus with a display unit | Uwe Schaller, Detlef Wolter, Hansjochen Schuck | 1997-02-11 |