Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4841143 | Charged particle beam apparatus | Hiroyasu Shichi, Kaoru Umemura | 1989-06-20 |
| 4835399 | Charged particle beam apparatus | Sumio Hosaka | 1989-05-30 |
| 4833331 | Method of holding an electrically insulating sample | Yoshinori Ikebe, Eiichi Izumi | 1989-05-23 |