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Zhifeng Liu

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  • Carlisle, MA, US
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Patents Applicationslast 30 patents

  • Information Patent Application

    DIGITALIZATION OF ANALOG MFC CONTROL INPUT
    • Publication number 20160202706
    • Publication date Jul 14, 2016
    • MKS Instruments, Inc,
    • Michael L'Bassi
    • G05 - CONTROLLING REGULATING
  • Information Patent Application

    PRESSURE-BALANCED CONTROL VALVES
    • Publication number 20140326909
    • Publication date Nov 6, 2014
    • MKS Instruments, Inc.
    • Junhua Ding
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...