Patents Assigned to SHANGHAI 21ST CENTURY ELECTRONIC EQUIPMENT CO., LTD.
  • Metal detector
    Patent number: D918062
    Type: Grant
    Filed: December 18, 2020
    Date of Patent: May 4, 2021
    Assignee: SHANGHAI 21ST CENTURY ELECTRONIC EQUIPMENT CO., LTD.
    Inventor: Xiaolin Qin
  • Metal detector control box
    Patent number: D918065
    Type: Grant
    Filed: December 25, 2020
    Date of Patent: May 4, 2021
    Assignee: SHANGHAI 21ST CENTURY ELECTRONIC EQUIPMENT CO., LTD.
    Inventor: Xiaolin Qin
  • Metal detector
    Patent number: D942279
    Type: Grant
    Filed: April 12, 2021
    Date of Patent: February 1, 2022
    Assignee: SHANGHAI 21ST CENTURY ELECTRONIC EQUIPMENT CO., LTD.
    Inventor: Yueling Zhang
  • Metal detector
    Patent number: D970366
    Type: Grant
    Filed: July 14, 2022
    Date of Patent: November 22, 2022
    Assignee: SHANGHAI 21ST CENTURY ELECTRONIC EQUIPMENT CO., LTD.
    Inventor: Xiaolin Qin
  • Metal detector
    Patent number: D980089
    Type: Grant
    Filed: July 22, 2022
    Date of Patent: March 7, 2023
    Assignee: SHANGHAI 21ST CENTURY ELECTRONIC EQUIPMENT CO., LTD.
    Inventor: Xiaolin Qin
  • Metal detector
    Patent number: D983672
    Type: Grant
    Filed: October 25, 2021
    Date of Patent: April 18, 2023
    Assignee: SHANGHAI 21ST CENTURY ELECTRONIC EQUIPMENT CO., LTD.
    Inventor: Xiaolin Qin
  • Metal detector arm support
    Patent number: D986750
    Type: Grant
    Filed: October 9, 2021
    Date of Patent: May 23, 2023
    Assignee: SHANGHAI 21ST CENTURY ELECTRONIC EQUIPMENT CO., LTD.
    Inventor: Xiaolin Qin
  • Metal detector
    Patent number: D994507
    Type: Grant
    Filed: June 22, 2021
    Date of Patent: August 8, 2023
    Assignee: SHANGHAI 21ST CENTURY ELECTRONIC EQUIPMENT CO., LTD.
    Inventor: Xiaolin Qin