Keigo Takeda

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Shiojiri, JP

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Patents Grantslast 30 patents

Information Patent Grant
Self-charging electronic timepiece
- Patent number 4,653,931
- Issue date Mar 31, 1987
- Shiojiri Kogyo Kabushiki Kaisha
- Keigo Takeda
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER