Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4837808 | Circuit connecting a voice-controlled device to a telephone station and line | Manfred Immendorfer, Dieter Kopp | 1989-06-06 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4837808 | Circuit connecting a voice-controlled device to a telephone station and line | Manfred Immendorfer, Dieter Kopp | 1989-06-06 |