Issued Patents 1994
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5359653 | Circuit arrangement for controlling the volume range of a voice terminal | Peter Heitkamper | 1994-10-25 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5359653 | Circuit arrangement for controlling the volume range of a voice terminal | Peter Heitkamper | 1994-10-25 |