Patents by Inventor Kin San So

Kin San So 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).

  • Home karaoke system
    Patent number: D524325
    Type: Grant
    Filed: September 11, 2003
    Date of Patent: July 4, 2006
    Assignee: The Singing Machine Company
    Inventors: Kwok Piu Lau, Kin San So