Patents Assigned to CHANGSHA U DE TOPTECH ELECTRONIC TECHNOLOGY CO., LTD
  • Alcohol tester
    Patent number: D966121
    Type: Grant
    Filed: March 31, 2021
    Date of Patent: October 11, 2022
    Assignee: CHANGSHA U DE TOPTECH ELECTRONIC TECHNOLOGY CO., LTD
    Inventor: Liang Li
  • Alcohol tester
    Patent number: D966122
    Type: Grant
    Filed: March 31, 2021
    Date of Patent: October 11, 2022
    Assignee: CHANGSHA U DE TOPTECH ELECTRONIC TECHNOLOGY CO., LTD
    Inventor: Liang Li
  • Breathalyzer
    Patent number: D1027686
    Type: Grant
    Filed: June 21, 2022
    Date of Patent: May 21, 2024
    Assignee: CHANGSHA U DE TOPTECH ELECTRONIC TECHNOLOGY CO., LTD.
    Inventor: Liang Li