Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4847836 | Circuit arrangement for synchronizing the units in the switching exchanges and repeaters of a time-division multiplex transmission system | — | 1989-07-11 |
HK
Heinz Keilholz
Overall (1989): #34,435 of 140,708Top 25%
1
Patents 1989