Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4336031 | Method for the calibration of an oxygen sensing unit and calibration agent therefor | Joachim Hopmeier, Helmut Leist | 1982-06-22 |
| 4334541 | Thermal protective circuit for a hyperemia-inducing physiological sensor | Helmut Leist | 1982-06-15 |