Morihisa Matumoto

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Hitachi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Contact structure for vacuum circuit breaker
- Patent number 5,189,270
- Issue date Feb 23, 1993
- Hitachi, Ltd.
- Morihisa Matumoto
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Vacuum interrupter
- Patent number 4,704,506
- Issue date Nov 3, 1987
- Hitachi, Ltd.
- Yukio Kurosawa
- H01 - BASIC ELECTRIC ELEMENTS