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Dejian BAO

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  • Yantai, CN
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Patents Applicationslast 30 patents

  • Information Patent Application

    AUTOMATIC GREASE INJECTION SYSTEM AND EXPLOITATION SYSTEM
    • Publication number 20240377026
    • Publication date Nov 14, 2024
    • YANTAI JEREH PETROLEUM EQUIPMENT & TECHNOLOGIES CO., LTD.
    • Wenyang YU
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    FRACTURING TRANSPORTATION SYSTEM
    • Publication number 20230272701
    • Publication date Aug 31, 2023
    • YANTAI JEREH PETROLEUM EQUIPMENT & TECHNOLOGIES CO., LTD.
    • Shulin ZHANG
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    FLEXIBLE PIPE END PORTION CONNECTION STRUCTURE
    • Publication number 20230160510
    • Publication date May 25, 2023
    • YANTAI JEREH PETROLEUM EQUIPMENT & TECHNOLOGIES CO., LTD.
    • Dejian BAO
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...