Patents by Inventor Shuigen Wen

Shuigen Wen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Attendance machine
    Patent number: D919621
    Type: Grant
    Filed: June 3, 2020
    Date of Patent: May 18, 2021
    Inventor: Shuigen Wen
  • Attendance machine
    Patent number: D919622
    Type: Grant
    Filed: June 3, 2020
    Date of Patent: May 18, 2021
    Inventor: Shuigen Wen