Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4392024 | Electronic key telephone set circuit for permitting dialing during failure of commercial power supplied to the set | Tsuyoshi Shinoi, Keisuke Mochizuki, Yoshimi Suzuki, Wataru Hashimoto | 1983-07-05 |