Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4840452 | Light wave conductor-sensor for tension | Helmut Federmann, Friedrich K. Levacher | 1989-06-20 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4840452 | Light wave conductor-sensor for tension | Helmut Federmann, Friedrich K. Levacher | 1989-06-20 |