TREA

Yushan Li

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  • Singapore, SG
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Patents Grantslast 30 patents

  • Information Patent Grant

    Gas lift valves
    • Patent number 9,546,541
    • Issue date Jan 17, 2017
    • Schlumberger Technology Corporation
    • Chao Wang
    • E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

  • Information Patent Application

    GAS LIFT VALVE
    • Publication number 20150233220
    • Publication date Aug 20, 2015
    • SCHLUMBERGER TECHNOLOGY CORPORATION
    • Weng Keong Tiong
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...