Akihiko Katsuki

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Fukuoka, JP

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Patents Grantslast 30 patents

Information Patent Grant
Ferroresonant three-phase constant AC voltage transformer arrangeme...
- Patent number 4,893,069
- Issue date Jan 9, 1990
- Nishimu Electronics Industries Co., Ltd.
- Kosuke Harada
- G05 - CONTROLLING REGULATING