Patents Assigned to DOOQOOM, Corp., LTD.
  • Hammerless check valve
    Patent number: D1006961
    Type: Grant
    Filed: October 6, 2020
    Date of Patent: December 5, 2023
    Assignee: DOOQOOM, Corp., LTD.
    Inventor: Sang Heon Lee
  • Strainer
    Patent number: D1019907
    Type: Grant
    Filed: October 6, 2020
    Date of Patent: March 26, 2024
    Assignee: DOOQOOM, CORP., LTD.
    Inventor: Sang Heon Lee