Tsukasa Felt Shoji Kabushiki Kaisha
Patent Applications and Registrations
Patent applications and USPTO patent grants for Tsukasa Felt Shoji Kabushiki Kaisha.The latest application filed is for "ink introducing tube and writing instrument incorporated with the same".
- Tsukasa Felt Shoji Kabushiki Kaisha - Tokyo JP
| Patent | Date |
|---|---|
| Ink introducing tube and writing instrument incorporated with the same Grant 6,659,671 - Fukami , et al. December 9, 2 | 2003-12-09 |
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