Kenichi Watanabe

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Yotsukaido, JP

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Patents Grantslast 30 patents

Information Patent Grant
Multiple exposure photographic device for camera
- Patent number 4,937,603
- Issue date Jun 26, 1990
- Seikosha Co., Ltd.
- Yukio Morino
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY