Masaru Yokosuka

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Hachioji, JP

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Patents Grantslast 30 patents

Information Patent Grant
Ceramic transparent piezoelectric transducer
- Patent number 4,367,426
- Issue date Jan 4, 1983
- Hitachi, Ltd.
- Akio Kumada
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES