Sukehisa Niwa

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Tokorozawa, JP

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Patents Grantslast 30 patents

Information Patent Grant
Steel for gears, having high strength, toughness and machinability
- Patent number 4,946,645
- Issue date Aug 7, 1990
- Daido Tokushuko Kabushiki Kaisha
- Kunio Namiki
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...