Issued Patents All Time
Showing 26–29 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4969763 | Lead forwarding mechanism retainer for thurst action mechanical pencil | Tadayoshi Ebinuma, Yoshihide Mitsuya | 1990-11-13 |
| 4968167 | Combined writing tool | — | 1990-11-06 |
| 4929107 | Swing-type mechanical pencil | Takahiko Suzuki, Yuichi Yamagishi | 1990-05-29 |
| 4856693 | Working out container of bar shaped article | Tadashi Yamamoto, Tadayoshi Ebinuma | 1989-08-15 |