Issued Patents 1989
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4841769 | Apparatus for measuring velocity of flow | Wolfgang Porth | 1989-06-27 |
| 4841938 | Device for determining the direction of flow | Wolfgang Porth | 1989-06-27 |
| 4831876 | Measurement probe | Wolfgang Porth | 1989-05-23 |
| 4825694 | Apparatus for measuring velocity of flow | — | 1989-05-02 |
| 4821700 | Device for determining mass flow and direction of flow | Wolfgang Porth | 1989-04-18 |