Patents by Inventor Robert C. Sistek

Robert C. Sistek 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 receiver
    Patent number: D262021
    Type: Grant
    Filed: July 18, 1979
    Date of Patent: November 24, 1981
    Inventors: Robert C. Sistek, Richard J. Kuhn, Thomas I. Agnew
  • Channel expander
    Patent number: D262288
    Type: Grant
    Filed: July 18, 1979
    Date of Patent: December 15, 1981
    Inventors: Robert C. Sistek, Richard J. Kuhn, Thomas I. Agnew