Waichi Nishikawa

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Kobe, JP

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Patents Grantslast 30 patents

Information Patent Grant
Pulse arc welding method and device in which pulse current and back...
- Patent number 4,409,465
- Issue date Oct 11, 1983
- Osaka Transformer Co., Ltd.
- Hideyuki Yamamoto
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR