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Bearing material
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Patent number 6,893,609
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Issue date May 17, 2005
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JFE Steel Corporation
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Akihiro Matsuzaki
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C21 - METALLURGY OF IRON
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Rolling bearing
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Patent number 6,858,100
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Issue date Feb 22, 2005
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Koyo Seiko Co., Ltd.
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Hisashi Harada
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Material for bearing parts
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Patent number 6,652,672
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Issue date Nov 25, 2003
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Koyo Seiko Co., Ltd.
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Satoshi Soga
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C21 - METALLURGY OF IRON
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Antifriction bearing
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Patent number 6,537,390
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Issue date Mar 25, 2003
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Koyo Seiko Co., Ltd.
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Masao Goto
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Bearing component
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Patent number 5,908,515
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Issue date Jun 1, 1999
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Koyo Seiko Co., Ltd.
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Masao Goto
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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Bearing steel
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Patent number 5,403,545
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Issue date Apr 4, 1995
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Aichi Steel Works, Ltd.
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Yatsuka Takata
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...