Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5647370 | Ultrasonic spirometer | — | 1997-07-15 |
| 5645071 | Method for the measurement of the molar mass of gases or gas mixtures and an apparatus for the performance of the method | Dieter Patzold, Walter Guggenbuhl, Christian Buess | 1997-07-08 |