Yasuhiro Masumoto

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Applicator having cap which pressurizes and seals inner space
- Patent number 5,542,771
- Issue date Aug 6, 1996
- Sailor Pen Co., Ltd.
- Yasuhiro Masumoto
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Grant
Applicator having cap which pressurizes and seals inner space
- Patent number 5,462,379
- Issue date Oct 31, 1995
- Sailor Pen Co., Ltd.
- Yasuhiro Masumoto
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES