Patents by Inventor John J. Slomkowski

John J. Slomkowski 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).

  • Device for displaying numbers
    Patent number: 3972139
    Abstract: A number-displaying device wherein a light chamber of an external unit is sub-divided by units wedged therein into seven compartments in a figure eight array, such that by selectively energizing an appropriate combination of seven lights (one in each said compartment), any number from zero to nine is formed in the display area of the device.
    Type: Grant
    Filed: October 21, 1974
    Date of Patent: August 3, 1976
    Assignee: Large Scale Readouts, Inc.
    Inventor: John J. Slomkowski