Masahiro Kionuma

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Single-lens reflex camera with built-in flash
- Patent number 4,893,140
- Issue date Jan 9, 1990
- Asahi Kogaku Kogyo Kabushiki Kaisha
- Masato Yamamoto
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY