Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4335612 | Method of detecting irregularities on bevel gears | Masahiko Yasugi, Shigeru Takahashi | 1982-06-22 |
| 4309312 | Manufacture of spherical alumina from gibbsite | Shizuo Takumi, Masaru Tatsushima | 1982-01-05 |