Patents by Inventor Richard Anthony Leoncavallo

Richard Anthony Leoncavallo 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).

  • Multiple face doll
    Patent number: 4030239
    Abstract: A doll with a rotatable head having oppositely positioned visible and hidden faces. One arm of doll may be rotated to load a torsion spring biasing the hidden face to an exposed position. The hidden face is held back by a detent. A pushbutton in the back of the doll may be pushed to release the detent so that the hidden face is suddenly moved to an exposed position by the torsion spring.
    Type: Grant
    Filed: January 29, 1976
    Date of Patent: June 21, 1977
    Assignee: Mattel, Inc.
    Inventors: Peter Charles White, John Terry Benson, Richard Anthony Leoncavallo