Yasuhito Kawahara

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Exposure indicating device in a single lens reflex camera having a...
- Patent number 4,134,661
- Issue date Jan 16, 1979
- Nippon Kogaku K.K.
- Sunao Ishizaka
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY