Issued Patents 2003
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6659509 | Threaded joint for steel pipes | Keishi Matsumoto, Kazuyuki Nakasuji, Toshiro Anraku, Shigeo Nagasaku | 2003-12-09 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6659509 | Threaded joint for steel pipes | Keishi Matsumoto, Kazuyuki Nakasuji, Toshiro Anraku, Shigeo Nagasaku | 2003-12-09 |