Patents by Inventor Albert L. Chao

Albert L. Chao 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).

  • Lighted jewelry box
    Patent number: 3937320
    Abstract: An improved jewelry box which incorporates a light to direct light rays at the jewelry contained therewith when the jewelry box cover is opened up; the device consisting of a miniaturized lamp bulb on the inner side of the cover in electric circuit with a pair of small dry cell batteries contained under the jewelry pad or pillow that is located in the case, and an electric switch located adjacent the hinge about which the cover pivots; the switch automatically closing the circuit when the cover is opened up.
    Type: Grant
    Filed: August 12, 1974
    Date of Patent: February 10, 1976
    Inventors: Albert L. Chao, Ethel Chao