Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4677689 | Circuit arrangement for an apparatus with a picture and/or sound channel | Manfred Halbe | 1987-06-30 |
HG
Hans J. Grambow
Overall (All Time): #3,977,692 of 4,157,543Top 100%
1
Patents All Time