Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5637880 | Method for extracting ion current from space of high vacuum into space of low vacuum | Kanenaga Fujii, Akiyoshi Chayahara, Atsushi Kinomura, Yoshiaki Mokuno | 1997-06-10 |