Tetuya Hasegawa

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Dry writing board possessing anti-halation effect and process for p...
- Patent number 4,123,590
- Issue date Oct 31, 1978
- Pilot Man-Nen-Hitsu Kabushiki Kaisha
- Tetuya Hasegawa
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES