Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4943714 | Method of continuous measurement of damping in an elongated light wave conductor-sensor having only one accessible end | Friedrich K. Levacher, Helmut Federmann, Anton Kraus | 1990-07-24 |
| 4900920 | Device for and method of measuring minute elongations by means of light wave conductor sensors | Helmut Federmann, Friedrich K. Levacher, Anton Kraus | 1990-02-13 |
| 4900922 | Arrangement of a light wave conductor-phase sensor for the measurement of minute elongations | Helmut Federmann, Friedrich K. Levacher, Anton Kraus | 1990-02-13 |
| 4840452 | Light wave conductor-sensor for tension | Helmut Federmann, Friedrich K. Levacher | 1989-06-20 |