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Nittan Valvle Co., Ltd.
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Tokyo, JP
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Patents Grants
last 30 patents
Information
Patent Grant
High corrosion resisting alloy for diesel engine valve and method f...
Patent number
6,139,660
Issue date
Oct 31, 2000
Daido Tokushuko Kabushiki Kaisha
Tomotaka Nagashima
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...