Takeshi Toyama

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Saitama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Aqueous ink cartridge with two part vent plug
- Patent number 4,565,463
- Issue date Jan 21, 1986
- Pentel Kabushiki Kaisha
- Kunihiko Otaguro
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES