Issued Patents 2002
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6336501 | Tube having grooved inner surface and its production method | Mamoru Ishikawa, Kiyonori Ozeki, Nobuaki Hinago | 2002-01-08 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6336501 | Tube having grooved inner surface and its production method | Mamoru Ishikawa, Kiyonori Ozeki, Nobuaki Hinago | 2002-01-08 |