Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5690442 | Metal tip for ball-point pen | Shinsuke Sato, Toshiaki Takayanagi, Toru Kitao | 1997-11-25 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5690442 | Metal tip for ball-point pen | Shinsuke Sato, Toshiaki Takayanagi, Toru Kitao | 1997-11-25 |