Kazuo Kawaguchi

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Kanagawa, JP

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Patents Grantslast 30 patents

Information Patent Grant
Pen core for writing instrument
- Patent number 4,556,336
- Issue date Dec 3, 1985
- Pilot Man-Nen-Hitsu Kabushiki Kaisha
- Tsunenori Sano
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES