Hiroyoshi Sadamura

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Ibaraki-ken, JP

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Patents Grantslast 30 patents

Information Patent Grant
Gas circuit breaker and liquid pressure-driving system to be used t...
- Patent number 5,804,787
- Issue date Sep 8, 1998
- Hitachi, Ltd.
- Goro Daimon
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Hydraulic drive device for circuit breaker and circuit breaker usin...
- Patent number 5,750,950
- Issue date May 12, 1998
- Hitachi, Ltd.
- Tadahiko Nogami
- H01 - BASIC ELECTRIC ELEMENTS