Issued Patents 2004
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6698844 | Earth discharging device for upward-facing shield machine | Yuuichi Asai, Osamu Takagi, Kazuo Takamizawa, Fumio Kondou, Hidetoshi Sakamoto | 2004-03-02 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6698844 | Earth discharging device for upward-facing shield machine | Yuuichi Asai, Osamu Takagi, Kazuo Takamizawa, Fumio Kondou, Hidetoshi Sakamoto | 2004-03-02 |