Koichi Tsukutani

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Matsudo, JA

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Patents Grantslast 30 patents

Information Patent Grant
Switching mechanism of a timepiece
- Patent number 4,057,698
- Issue date Nov 8, 1977
- Kabushiki Kaisha Daini Seikosha
- Yasuichi Nakagawa
- H01 - BASIC ELECTRIC ELEMENTS