Hiroshi Kozawa

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Katsuta, JP

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Patents Grantslast 30 patents

Information Patent Grant
Gas circuit breaker
- Patent number 5,723,839
- Issue date Mar 3, 1998
- Hitachi, Ltd.
- Hiroshi Kozawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Switch apparatus
- Patent number 5,023,415
- Issue date Jun 11, 1991
- Hitachi, Ltd.
- Syunji Itoh
- H01 - BASIC ELECTRIC ELEMENTS