Patents Assigned to SHENZHEN HONGHAO TIANCHENG TECHNOLOGY CO., LTD.
  • Alarm clock
    Patent number: D836005
    Type: Grant
    Filed: November 27, 2017
    Date of Patent: December 18, 2018
    Assignee: SHENZHEN HONGHAO TIANCHENG TECHNOLOGY CO., LTD.
    Inventor: Zhoufeng Lu