Patents Assigned to HAUDONGCHUN Co., Ltd.
  • Syringe for vaginal feminine hygiene
    Patent number: D834190
    Type: Grant
    Filed: July 14, 2017
    Date of Patent: November 20, 2018
    Assignee: HAUDONGCHUN Co., Ltd.
    Inventor: Won-seok Choi
  • Syringe plunger
    Patent number: D844133
    Type: Grant
    Filed: July 14, 2017
    Date of Patent: March 26, 2019
    Assignee: HAUDONGCHUN Co., Ltd.
    Inventor: Won-seok Choi