Patents by Inventor Sheng N. Chen

Sheng N. Chen 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).

  • Large tire bolt fixing tool
    Patent number: 4995296
    Abstract: A large tire bolt fixing tool used for screwing on or off tire bolts in a large automobile, utilizing the air compressing system of the automobile in operating this tool.
    Type: Grant
    Filed: January 23, 1990
    Date of Patent: February 26, 1991
    Inventor: Sheng N. Chen