Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6552915 | Communications apparatus and plug-in unit | Tsutomu Takahashi, Hisao Hayashi, Mitsuo Kaetsu, Shiro Tani, Hideki Zenitani +1 more | 2003-04-22 |
| 5602723 | Subrack device | Tsutomu Takahashi, Hiroshi Yamaji, Hisao Hayashi, Shigeru Amagasa, Takashi Sato +5 more | 1997-02-11 |