Patents Assigned to SHANGHAI DRAGON-STAR CO., LTD.
  • Tool organizer
    Patent number: D934564
    Type: Grant
    Filed: July 22, 2020
    Date of Patent: November 2, 2021
    Assignee: SHANGHAI DRAGON-STAR CO., LTD.
    Inventor: Hong Wu
  • Spade drill bit
    Patent number: D1044893
    Type: Grant
    Filed: December 2, 2021
    Date of Patent: October 1, 2024
    Assignee: SHANGHAI DRAGON-STAR CO., LTD.
    Inventor: Hong Wu