Patents by Inventor Tae J. Oh

Tae J. Oh 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).

  • Dual functional, electrical plug use in conjunction with an electric appliance
    Patent number: 4997381
    Abstract: A dual functional, electrical plug use in connection with an electric appliance which includes a plug receiving member having a pair of cylindically shaped grooves and attached to the electric appliance, a casing member adapted to receive the plug receiving member, a first plug member having a pair of cylindrical shaped electrical pin member and a pair of rectangular shaped grooves and rotatably mounted to the plug receiving member, and a second plug member having a pair of rectangular shaped electrical pin member and rotatably mounted to the first plug member, whereby the first and second plug members form a composite structure enabling the selective use of either the first plug member or the second plug member depending upon high voltage usage or low voltage usage.
    Type: Grant
    Filed: February 26, 1990
    Date of Patent: March 5, 1991
    Inventor: Tae J. Oh