Patents by Inventor Ronald W. Shimanek

Ronald W. Shimanek 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).

  • Electronic indicator
    Patent number: 4039956
    Abstract: An electronic frequency indicator for an AM/FM receiver utilizing a plurality of light-emitting diodes. The intensity of the diodes is varied to achieve greater resolution for the number of diodes in the indicator.
    Type: Grant
    Filed: September 5, 1975
    Date of Patent: August 2, 1977
    Assignee: General Motors Corporation
    Inventors: Ronald W. Shimanek, Mark A. Franklin