Patents by Inventor Ying-Tsong Lai

Ying-Tsong Lai 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).

  • Screwdriver handle
    Patent number: D431989
    Type: Grant
    Filed: January 28, 2000
    Date of Patent: October 17, 2000
    Inventor: Ying-Tsong Lai