Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4523874 | Plastic underdrainage tube | Toyokazu Nishio, Shinzo Matsuyama, Shinichi Yamazaki | 1985-06-18 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4523874 | Plastic underdrainage tube | Toyokazu Nishio, Shinzo Matsuyama, Shinichi Yamazaki | 1985-06-18 |