Patents by Inventor Patricia Diane Royko

Patricia Diane Royko 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).

  • Information demonstration device
    Patent number: 4047309
    Abstract: A portable device for demonstrating information including a receptacle with bottom and side walls. A lid is pivotably mounted on a side wall of the receptacle and a support element is mounted on the opposite edge of the lid. Leaf elements such as felt boards and peg boards are pivotably disposed at the intersection of the lid and support element.
    Type: Grant
    Filed: November 3, 1975
    Date of Patent: September 13, 1977
    Inventor: Patricia Diane Royko