Patents by Inventor Gallen K. Leung Tsui

Gallen K. Leung Tsui 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).

  • Wall switch
    Patent number: D621795
    Type: Grant
    Filed: November 13, 2009
    Date of Patent: August 17, 2010
    Inventors: Gallen K. Leung Tsui, Philip Y. W. Tsui