Patents Assigned to QINGDAO MEFINE ELECTRONICS TECHNOLOGY CO., LTD.
  • Electronic ballast
    Patent number: D766824
    Type: Grant
    Filed: April 7, 2015
    Date of Patent: September 20, 2016
    Assignee: QINGDAO MEFINE ELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Yongshan Li, Renjie Zhang, Xin Yang
  • Electronic ballast
    Patent number: D766825
    Type: Grant
    Filed: April 7, 2015
    Date of Patent: September 20, 2016
    Assignee: QINGDAO MEFINE ELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Yongshan Li, Renjie Zhang, Xin Yang
  • Electronic ballast
    Patent number: D778833
    Type: Grant
    Filed: April 7, 2015
    Date of Patent: February 14, 2017
    Assignee: QINGDAO MEFINE ELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Yongshan Li, Renjie Zhang, Xin Yang