Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4656660 | Office line holding circuit with an automatic release function for direct connection telephone system | Toshio Nishimura | 1987-04-07 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4656660 | Office line holding circuit with an automatic release function for direct connection telephone system | Toshio Nishimura | 1987-04-07 |