Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4231017 | Switching matrix equipment having a series circuit of relay coil and self-holding diode at each crosspoint | Yoshiro Hasegawa | 1980-10-28 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4231017 | Switching matrix equipment having a series circuit of relay coil and self-holding diode at each crosspoint | Yoshiro Hasegawa | 1980-10-28 |