Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6776161 | Head harness for a respirator | — | 2004-08-17 |
| 6718971 | Feeding apparatus for breathing masks that allows food and drink intake when the mask is in use | Klaus-Dieter Dahrendorf | 2004-04-13 |