Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4622438 | Subscriber line radio concentration system with automatic response for a loop back test | Takafumi Shimizu | 1986-11-11 |
IT
Ichiro Tomizawa
Overall (All Time): #4,004,848 of 4,157,543Top 100%
1
Patents All Time