Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4888171 | Granular product of dried microorganism cells and manufacturing method therefor | Shigeo Okonogi, Mamoru Tomita, Seiichi Shimamura, Tsutomu Kudo | 1989-12-19 |
| 4862281 | Manual sweeping apparatus | Takashi Sato, Kazuki Yamauchi | 1989-08-29 |