Patents Assigned to CROWN TECH LLC
  • Microphone isolation shield
    Patent number: D905022
    Type: Grant
    Filed: July 22, 2020
    Date of Patent: December 15, 2020
    Assignee: CROWN TECH LLC
    Inventor: Chaofan Zheng
  • Microphone isolation shield
    Patent number: D910604
    Type: Grant
    Filed: July 22, 2020
    Date of Patent: February 16, 2021
    Assignee: CROWN TECH LLC
    Inventor: Chaofan Zheng