Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4802206 | Calling system for enabling speech transmission from a caller to a called busy party in a telephone system | Tadahiro Yoshida | 1989-01-31 |
| 4660195 | Channel detecting circuit in a receiver in a time-division multiplex transmission system | — | 1987-04-21 |
| 4638478 | Frame synchronizing system in a receiver in a time-division multiplex transmission system | — | 1987-01-20 |