TREA

WELLADV OIL SERVICE LIMITED

Follow

Organization

  • Hong Kong, CN
Organizations

Patents Grantslast 30 patents

Patents Applicationslast 30 patents

  • Information Patent Application

    A DRILLING AUXILIARY SYSTEM
    • Publication number 20160265346
    • Publication date Sep 15, 2016
    • Welladv Oil Service Limited
    • Weishan HAN
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    AUXILIARY SYSTEM FOR USE IN DRILLING
    • Publication number 20160230544
    • Publication date Aug 11, 2016
    • WELLADV OIL SERVICE LIMITED
    • Weishan Han
    • G01 - MEASURING TESTING

Trademarklast 30 trademarks