Takeo Oki

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Hatano, JP

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Patents Grantslast 30 patents

Information Patent Grant
Opening and closing device for retractable nib fountain pen
- Patent number 4,560,298
- Issue date Dec 24, 1985
- Pilot Man-Nen-Hitsu Kabushiki Kaisha
- Takeo Oki
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Grant
Fountain pen with specific tubular nib
- Patent number 4,269,528
- Issue date May 26, 1981
- Pilot Man-Nen-Hitsu Kabushiki Kaisha
- Takeo Oki
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES