Issued Patents 2005
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6923602 | Drill having construction for reducing thrust load in drilling operation, and method of manufacturing the drill | Jiro Osawa, Kenjiro KOBAYASHI, Takahiro Yamamoto, Yoshihiro Takikawa | 2005-08-02 |