Patents by Inventor Mary K. Litwicki

Mary K. Litwicki 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: 5106150
    Abstract: A roof structure for a toy vehicle is disclosed. The roof structure includes a pair of upstanding members attached to the one end of the vehicle's body. An inverted U-shaped frame having a horizontal crossmember is provided on the opposite end of the vehicle's body. A roof panel is pivotally connected at one end thereof between the upstanding members. In addition, a slide panel is provided in the roof panel to open or close a central opening therein. The roof panel may be pivotally moved between a horizontal position resting on the crossmember and a retracted position between the upstanding members while the slide panel may be optionally opened or closed.
    Type: Grant
    Filed: February 9, 1990
    Date of Patent: April 21, 1992
    Assignee: Spang & Co.
    Inventor: Mary K. Litwicki
  • Patent number: 4755159
    Abstract: A carrying case which may be used as a toy building or toy playground. The carrying case has two foldable sides rotatably and removably hinged to its base by breakaway hinges featuring ball and socket portions. The other two sides of the carrying case remain in a vertical position attached to the base. A roof portion is connected to one of the foldable sides by breakaway hinges. The foldable sides and roof portion may be rotated to unfold the carrying case so that it may be used as toy playground. The roof portion has a built-in slide and swing. It may be removed from the carrying case and used as a separate toy. The carrying case may be folded to simulate a toy building or schoolhouse with a roof portion latched to the top of the case.
    Type: Grant
    Filed: July 15, 1986
    Date of Patent: July 5, 1988
    Assignee: Mattel, Inc.
    Inventors: Sheldon Templeton, Paul Norris, Roger Newbold, Mary K. Litwicki
  • Patent number: D323193
    Type: Grant
    Filed: February 9, 1990
    Date of Patent: January 14, 1992
    Assignee: Spang & Co.
    Inventor: Mary K. Litwicki