Patents Assigned to Duad Co., Ltd.
  • Toothbrush handle
    Patent number: D531415
    Type: Grant
    Filed: January 23, 2006
    Date of Patent: November 7, 2006
    Assignee: Duad Co., Ltd.
    Inventor: Sung-Joon Won
  • Folding toothbrush head and handle unit
    Patent number: D762390
    Type: Grant
    Filed: August 5, 2013
    Date of Patent: August 2, 2016
    Assignee: DUAD CO., LTD
    Inventor: Choong Soon Song