Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5685039 | Cleaning apparatus | Mitiaki Matsushita, Kiyohisa Tateyama, Akira Yonemizu | 1997-11-11 |
| 5636401 | Cleaning apparatus and cleaning method | Akira Yonemizu, Nobukazu Ishizaka | 1997-06-10 |