Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4856094 | Arrangement for polarization control, such as for an optical heterodyne or homodyne receiver | Helmut Heidrich, Hans-Peter Nolting | 1989-08-08 |
| 4832431 | Apparatus for continuous polarization and phase control | Hans-Peter Nolting, Helmut Heidrich | 1989-05-23 |