Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4845438 | Phase comparison circuit | — | 1989-07-04 |
| 4800428 | Circuit arrangement for a television receiver comprising a video text decoder | Martin H. Johanndeiter | 1989-01-24 |
DO
Detlef W. K. Oldach
Overall (1989): #29,107 of 140,708Top 25%
2
Patents 1989