Patents Assigned to STB INTERNATIONAL LIMITED
  • Earphones
    Patent number: D922358
    Type: Grant
    Filed: August 13, 2020
    Date of Patent: June 15, 2021
    Assignee: STB INTERNATIONAL LIMITED
    Inventor: Junfeng Li
  • Earphones
    Patent number: D929378
    Type: Grant
    Filed: May 10, 2021
    Date of Patent: August 31, 2021
    Assignee: STB INTERNATIONAL LIMITED
    Inventor: Junfeng Li
  • Pair of earphones
    Patent number: D971887
    Type: Grant
    Filed: May 10, 2021
    Date of Patent: December 6, 2022
    Assignee: STB INTERNATIONAL LIMITED
    Inventor: Junfeng Li
  • Pair of earphones
    Patent number: D971888
    Type: Grant
    Filed: May 10, 2021
    Date of Patent: December 6, 2022
    Assignee: STB INTERNATIONAL LIMITED
    Inventor: Junfeng Li