Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4399031 | Biological sewage treatment apparatus of the rotary disc type | Shiro Imano, Yoshio Sasaki, Yukio Otsuka | 1983-08-16 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4399031 | Biological sewage treatment apparatus of the rotary disc type | Shiro Imano, Yoshio Sasaki, Yukio Otsuka | 1983-08-16 |