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Horizontal hobbing machine
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Patent number 5,947,663
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Issue date Sep 7, 1999
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Mitsubishi Heavy Industries, Ltd.
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Tsuneo Egawa
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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CNC lathe
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Patent number 5,239,901
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Issue date Aug 31, 1993
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I-Nan Lin
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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Repair of flight bars
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Patent number 4,988,033
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Issue date Jan 29, 1991
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Advanced Longwall Equipment, Inc.
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Friedhelm E. Hesse
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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1189247
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Patent number 1,189,247
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Issue date Jul 4, 1916
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B24 - GRINDING POLISHING
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1060170
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Patent number 1,060,170
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Issue date Apr 29, 1913
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B24 - GRINDING POLISHING
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900174
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Patent number 900,174
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Issue date Oct 6, 1908
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B24 - GRINDING POLISHING
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439018
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Patent number 439,018
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Issue date Oct 21, 1890
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A43 - FOOTWEAR
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373830
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Patent number 373,830
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Issue date Nov 29, 1887
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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270365
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Patent number 270,365
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Issue date Jan 9, 1883
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B24 - GRINDING POLISHING
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146290
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Patent number 146,290
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Issue date Jan 6, 1874
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR