Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6637525 | Ground drilling machine and rod exchanger utilized therefor | Kentaro Watanabe, Toyohiko Youan, Tooru Hishiyama | 2003-10-28 |
| 6535414 | Semiconductor storage device | Junnichi Suzuki | 2003-03-18 |