Patents by Inventor Hwang L. Fei

Hwang L. Fei 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).

  • Painting board for children
    Patent number: D359509
    Type: Grant
    Filed: May 31, 1994
    Date of Patent: June 20, 1995
    Inventor: Hwang L. Fei