Granted Patent
Utility
US 4,739,398 · App. 06/859,134
Method, apparatus and system for recognizing broadcast segments
Inventors:
William L. Thomas, Steven J. Sletten, John Mathews, Jeffrey C. Swinehart, Michael W. Fellinger, John Erik Hershey, George P. Hyatt, Robert F. Kubichek
Patented Case
View Patent ↗
Granted: Apr 19, 1988
Filed: May 2, 1986
Inventors
William L. Thomas
Steven J. Sletten
John Mathews
Jeffrey C. Swinehart
Michael W. Fellinger
John Erik Hershey
George P. Hyatt
Robert F. Kubichek
Assignee (at issue)
Control Data Corporation
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.