Isao Yamazaki

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Ibaraki, JP

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Patents Grantslast 30 patents

Information Patent Grant
Production of carbon steel and low-alloy steel with bottom blowing...
- Patent number 4,280,838
- Issue date Jul 28, 1981
- Sumitomo Metal Industries, Ltd.
- Katsukiyo Marukawa
- C21 - METALLURGY OF IRON