Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4791638 | Signal processsing circuit for a telephone set | Hitoshi Sugiyama | 1988-12-13 |
| 4611136 | Signal delay generating circuit | — | 1986-09-09 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4791638 | Signal processsing circuit for a telephone set | Hitoshi Sugiyama | 1988-12-13 |
| 4611136 | Signal delay generating circuit | — | 1986-09-09 |