Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4871934 | Induction motor | Kiyokazu Okamoto, Tetsuo Endo, Yukio Miyamoto | 1989-10-03 |
| 4844851 | Surface metallizing method | Hiroshi Hotta | 1989-07-04 |
| 4836889 | Surface treating method for polyacetal resin molded articles | Tomoyuki Aketa | 1989-06-06 |