Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5634692 | Main-ancillary tunnel excavator | Kenichi Kaneko, Toshihiko Bessho, Toshihumi Inoue, Masahiko Sugiyama | 1997-06-03 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5634692 | Main-ancillary tunnel excavator | Kenichi Kaneko, Toshihiko Bessho, Toshihumi Inoue, Masahiko Sugiyama | 1997-06-03 |