Makoto Tazawa

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Hitachi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Vacuum switch and vacuum switch gear using the vacuum switch
- Patent number 6,335,502
- Issue date Jan 1, 2002
- Hitachi, Ltd.
- Shuichi Kikukawa
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER