Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4867629 | Dusttight storage cabinet apparatus for use in clean rooms | Yoshiyuki Iwasawa, Tsutomu Ishida, Hiroshi Harada, Kenji Okamoto, Takashi Matsumoto +4 more | 1989-09-19 |
| 4826360 | Transfer system in a clean room | Yoshiyuki Iwasawa, Tsutomu Ishida, Hiroshi Harada | 1989-05-02 |