Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4588860 | Battery feed circuit for telephone subscriber line | Mitsutoshi Ayano, Kiyoshi Shibuya, Kenji Takatou, Toshiro Tojo | 1986-05-13 |
SI
Shin-ichi Itou
Overall (All Time): #3,995,576 of 4,157,543Top 100%
1
Patents All Time