Osamu Hirao

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Metal oxide varistor made by a co-precipation process and freeze-dried
- Patent number 4,540,971
- Issue date Sep 10, 1985
- Tokyo Shibaura Denki Kabushiki Kaisha
- Hideyuki Kanai
- H01 - BASIC ELECTRIC ELEMENTS