Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4824035 | Cage mill | Sousuke Naito, Shunzo Shimai, Toshio Watanabe, Yasuji Otsuka | 1989-04-25 |
| 4580736 | Cage mill | Junya Yamano, Sousuke Naito, Toshio Watanabe, Tomeyoshi Nakajo | 1986-04-08 |