Yoshihiro Tomura

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Omiya, JP

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Patents Grantslast 30 patents

Information Patent Grant
Multiple-point writing instrument including a mechanical pencil unit
- Patent number 4,202,641
- Issue date May 13, 1980
- Pilot Man-Nen-Hitsu Kabushiki Kaisha
- Yoshihiro Tomura
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Grant
Writing unit locking mechanism in a multiple-point writing implemen...
- Patent number 4,148,591
- Issue date Apr 10, 1979
- Pilot Man-Nen-Hitsu Kabushiki Kaisha
- Yoshihiro Tomura
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES