Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7128168 | Reamer apparatus for ground boring machine | — | 2006-10-31 |
| 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 |
| 6637525 | Ground drilling machine and rod exchanger utilized therefor | Kentaro Watanabe, Kazuyuki Yamazaki, Tooru Hishiyama | 2003-10-28 |