Patents Assigned to BEIJING RUNDE HONGTU TECHNOLOGY DEVELOPMENT CO. LTD.
  • Drainage connecting pipe
    Patent number: D816195
    Type: Grant
    Filed: August 16, 2016
    Date of Patent: April 24, 2018
    Assignee: BEIJING RUNDE HONGTU TECHNOLOGY DEVELOPMENT CO. LTD.
    Inventor: Runfan Li
  • Drainage connecting pipe
    Patent number: D816810
    Type: Grant
    Filed: August 16, 2016
    Date of Patent: May 1, 2018
    Assignee: BEIJING RUNDE HONGTU TECHNOLOGY DEVELOPMENT CO. LTD.
    Inventor: Runfan Li