Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4370986 | Method and apparatus for determining the deposition of particles in the respiratory tract and/or for checking the function of the respiratory tract | Gerhard Heigwer, Joachim Heyder, Willi Stahlhofen | 1983-02-01 |