Masahiro Hyakawa

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Water-sealed camera
- Patent number 5,077,567
- Issue date Dec 31, 1991
- Asahi Kogaku Kogyo Kabushiki Kaisha
- Keisuke Haraguchi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY