Patents by Inventor Defa Li

Defa Li 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).

  • Patent number: D970256
    Type: Grant
    Filed: August 21, 2021
    Date of Patent: November 22, 2022
    Assignee: Tengzhou Shijia Inflatables Model Co., Ltd.
    Inventor: Defa Li