Patents by Inventor Sifeng Xu

Sifeng Xu 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).

  • Activity gym for babies
    Patent number: D975789
    Type: Grant
    Filed: January 12, 2022
    Date of Patent: January 17, 2023
    Assignee: SHENZHEN CONGLIDA TECHNOLOGY CO., LTD.
    Inventor: Sifeng Xu
  • Activity gym for babies
    Patent number: D975790
    Type: Grant
    Filed: January 12, 2022
    Date of Patent: January 17, 2023
    Assignee: SHENZHEN CONGLIDA TECHNOLOGY CO., LTD.
    Inventor: Sifeng Xu