Issued Patents 2005
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6932171 | Ground drilling machine | Kentaro Watanabe, Eiichi Muramoto, Kazuyuki Yamazaki | 2005-08-23 |
| 6913094 | Leading body for ground drilling and ground drilling machine | Kentaro Watanabe, Eiichi Muramoto, Touru Hishiyama | 2005-07-05 |