Patents by Inventor Tong Y. Lee

Tong Y. Lee 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).

  • Patent number: 5533290
    Abstract: A picture frame includes a frame body fastened with an open mounting frame to hold a glass and a picture, a back cover covered on the open mounting frame, a mounting plate covered on the back cover and retained between the back cover and the open mounting frame, a back board supported on springs on the mounting plate and having two electrically connected metal contact strips, and a sound generating circuit assembly installed in the back cover and having two opposite terminals connected to metal contact pins on the mounting plate, wherein when the glass is pressed against the back board to compress the springs, the metal contact pins become electrically connected by the metal contact strips causing the sound producing circuit assembly triggered to produce sound.
    Type: Grant
    Filed: November 29, 1993
    Date of Patent: July 9, 1996
    Inventors: Tong Y. Lee, Jack Kao