Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4353388 | Butterfly valve | Mitsunori Isoyama, Masatoshi Nakai | 1982-10-12 |
| 4334433 | Method and apparatus for measuring thickness of clad steel | Shizuo Takahashi, Satoru Matsumi, Toshiyuki Sugiyama | 1982-06-15 |