Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5583492 | Method and apparatus for monitoring inside a manhole | Yutaka Nakanishi, Shinichi Nakagawa, Yoshiaki Nakatsuru, Yasuyuki Hishida, Ryoji Matsubara | 1996-12-10 |
| 5150038 | System for detecting the extraordinary approach of objects having earth potential toward a power transmission line | Junichi Kaitou | 1992-09-22 |