Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5099474 | Digital exchange and its control method | Kimio Ikemori | 1992-03-24 |
| 5077734 | Electronic exchange apparatus synchronized with digital network | — | 1991-12-31 |
| 5007049 | Electronic exchange having a conference telephone communication function and conference telephone communication method | — | 1991-04-09 |
| 4987591 | Electronic telephone apparatus able to supply sync clock signals reliably, and method of controlling the supply of sync clock signals | — | 1991-01-22 |