Patents by Inventor George T. Thorn

George T. Thorn 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: 4858357
    Abstract: A card for exhibiting and displaying alphanumeric information, such as a pricing sign for retail use, is provided. Generally the card is reusable. At least a portion of the face of the card has a background formed thereon in a dark colour, and a plurality of multi-segmented alphanumeric presentation display digit. Each of the display digits has at least seven bar segments so arranged as to form the digit "8". Various alphanumeric digits or letters can be formed by changing the colour of none or some of the bar segments of each display digit, so as to change its value, using a marker having an ink which is substantially the same colour as the colour of the background. The changed displays thereby present alphanumeric data, most usually pricing data, as desired. The card may be reused by wiping the changed display digits with a dampened wiping means which may carry water or a specific solvent, depending on the nature of the ink that has been used in the marker when the display digit was first changed.
    Type: Grant
    Filed: June 30, 1987
    Date of Patent: August 22, 1989
    Assignee: Octagon Industries Inc.
    Inventor: George T. Thorn