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Stainless steel multifold pipe
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Patent number 5,458,156
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Issue date Oct 17, 1995
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Nisshin Steel Co., Ltd.
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Naoto Okubo
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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Heat-resistant austenitic stainless steel
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Patent number 4,999,159
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Issue date Mar 12, 1991
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Nisshin Steel Company, Ltd.
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Yoshihiro Uematsu
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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Corrosion resistant alloy
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Patent number 4,652,428
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Issue date Mar 24, 1987
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Nisshin Steel Co., Ltd.
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Shigeaki Maruhashi
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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Corrosion resistant alloy
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Patent number 4,581,066
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Issue date Apr 8, 1986
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Nisshin Steel Co., Ltd.
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Shigeaki Maruhashi
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...