Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5577027 | Apparatus and method for effectively eliminating the echo signal of transmitting signal in a modem | — | 1996-11-19 |
| 5189664 | Listener echo cancellation | — | 1993-02-23 |
| 5093847 | Adaptive phase lock loop | — | 1992-03-03 |
| 4481622 | High speed dial-up telephone circuit full duplex data transmission techniques | Arthur J. Carlson | 1984-11-06 |