Takeyuki Yamamoto

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Hiratsuka, JP

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Patents Grantslast 30 patents

Information Patent Grant
Ballpoint pen containing an aqueous ink composition
- Patent number 5,609,432
- Issue date Mar 11, 1997
- Kabushiki Kaisha Pilot
- Takeyuki Yamamoto
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES