Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5929909 | Videophone system having a camera and a shutter | Herbert Hoelzemann, Manfred Spruck | 1999-07-27 |
| 5528297 | Convertible video camera/projector | Fang Lei, Dieter Probach, Manfred Spruck | 1996-06-18 |