Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10765894 | Head protection device and respirator device | Olaf Balke, Katja FRANKE | 2020-09-08 |
| 9839798 | Safety hood with a visor size-independent fastening on the head strap | Katja FRANKE, Olaf Balke | 2017-12-12 |