Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4845497 | Conference circuit for a digital communication system | Lothar Windolf | 1989-07-04 |
| 4445752 | Optical fiber switch with rotary gear movement | Johannes W. Faber | 1984-05-01 |