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Vacuum pump
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Patent number 10,364,814
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Issue date Jul 30, 2019
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Edwards Japan Limited
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Yongwei Shi
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F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
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Vacuum pump
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Patent number 8,246,300
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Issue date Aug 21, 2012
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Edwards Japan Limited
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Yongwei Shi
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F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
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Gas compressor
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Patent number 7,563,081
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Issue date Jul 21, 2009
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Calsonic Compressor Inc.
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Seiichiro Yoda
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F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
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Magnetic bearing device
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Patent number 6,362,549
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Issue date Mar 26, 2002
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Seiko Instruments Inc.
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Yongwei Shi
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...