Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4829562 | Receiver for detecting different fixed frequency signals on a telephone trunkline | Peter Meschkat | 1989-05-09 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4829562 | Receiver for detecting different fixed frequency signals on a telephone trunkline | Peter Meschkat | 1989-05-09 |