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Rail grinding apparatus
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Patent number 5,303,514
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Issue date Apr 19, 1994
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Sumikin Osaka Plant Engineering Co., Ltd.
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Hirotsugu Oishibashi
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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Gas pressure welding machine
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Patent number 4,576,324
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Issue date Mar 18, 1986
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Japanese National Railways
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Tadashi Takimoto
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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Build-up spraying apparatus
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Patent number 4,520,756
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Issue date Jun 4, 1985
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Japanese National Railways
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Mitsuji Hayashi
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C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
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