Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4573016 | Method and arrangement for enabling the detection of the location of a horizontally arranged gas conveying passage positioned underground | Syuichi Nakamura | 1986-02-25 |
| 4449098 | Arrangement for detecting the location of an electrically insulative continuous item positioned underground | Syuichi Nakamura | 1984-05-15 |