Kiyosi Hirasawa

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Fujioka, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method of fabricating an eraser
- Patent number 4,374,225
- Issue date Feb 15, 1983
- Mitsubishi Pencil Co., Ltd.
- Takamasa Kawakubo
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES