Toshikazu Shiobara

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Honjo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Ball-point pen venting arrangement
- Patent number 4,669,906
- Issue date Jun 2, 1987
- Pilot Man-Nen-Hitsu Kabushiki Kaisha
- Kunio Narushima
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES