Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4702024 | Helical dredge cutter head with scoop-in plates | Seiichi Goto, Keishi Ito | 1987-10-27 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4702024 | Helical dredge cutter head with scoop-in plates | Seiichi Goto, Keishi Ito | 1987-10-27 |