Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4562308 | Subscriber connection circuit comprising feed resistors which can be bridged in low-ohmic fashion and an indication circuit which effects different indications | Werner Nagler, Walter Ossler | 1985-12-31 |
| 4492821 | Subscriber connection circuit | — | 1985-01-08 |
| 4443669 | Subscriber connection circuit | — | 1984-04-17 |