Patents by Inventor Rita O'Sullivan

Rita O'Sullivan 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).

  • Visual teaching aid for number concept
    Patent number: 4176474
    Abstract: An educational device for teaching whole numbers to children; the device including a board having horizontal rows of pockets, and each pocket of the rows is identified either as "ones", "tens", "hundreds" etc. in proper sequence, so that cards having numerical digits printed on them can be placed by a child in the pockets, in response to a whole number, printed on a different set of cards, and which are called out by a teacher.
    Type: Grant
    Filed: September 1, 1978
    Date of Patent: December 4, 1979
    Inventor: Rita O'Sullivan