Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5896926 | Packer type groundwater sampling system and water sampling method | Katsuhiro Hama, Koichi Yanagisawa, Katsushi Nakano, Hiroshi Mori, Yukifusa Nakashima +2 more | 1999-04-27 |