Patents by Inventor Yangji Lei

Yangji Lei 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).

  • Rolling door
    Patent number: D1022251
    Type: Grant
    Filed: September 25, 2023
    Date of Patent: April 9, 2024
    Inventor: Yangji Lei
  • Rolling door
    Patent number: D1024358
    Type: Grant
    Filed: September 26, 2023
    Date of Patent: April 23, 2024
    Inventor: Yangji Lei