Asakawa Shigeki

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Amagasaki, JP

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Patents Grantslast 30 patents

Information Patent Grant
Contact material for vacuum interrupter
- Patent number 4,853,184
- Issue date Aug 1, 1989
- Mitsubishi Denki Kabushiki Kaisha
- Naya Eizo
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...