Yoshinori Tagawa

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Hitachi, JP

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Patents Grantslast 30 patents

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Power apparatus and method of location of a fault in a power appara...
- Patent number 5,256,976
- Issue date Oct 26, 1993
- Hitachi, Ltd.
- Toshio Ishikawa
- G01 - MEASURING TESTING
Information Patent Grant
Apparatus and method for diagnosis of power appliances
- Patent number 5,253,180
- Issue date Oct 12, 1993
- Hitachi, Ltd.
- Tokio Yamagiwa
- G01 - MEASURING TESTING
Information Patent Grant
Power apparatus, power transmission/distribution unit, and tripping...
- Patent number 5,124,687
- Issue date Jun 23, 1992
- Hitachi, Ltd.
- Kiyoshi Okumura
- G01 - MEASURING TESTING