Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4859013 | Magneto-optical waveguide device with artificial optical anisotropy | Gunter Schmitz, Hans Dammann | 1989-08-22 |
| 4859014 | Non-reciprocal optical waveguide device, particularly for use as an isolator or circulator | Hans Dammann | 1989-08-22 |
| 4854701 | Arrangement for inspecting light waveguide end faces | Joachim Noll, Vladimir Blazek | 1989-08-08 |