Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7023636 | Information recording/reproducing apparatus | — | 2006-04-04 |
| 4214731 | Butterfly valve | Kazuhiro Yamazaki | 1980-07-29 |
| 4193320 | Collapsible lever device for operating valve | — | 1980-03-18 |