Granted Patent
Utility
US 4,658,290 · App. 06/658,378
Television and market research data collection system and method
Inventors:
William J. McKenna, Kenneth W. Silvers, Rand B. Nickerson, Russell J. Welsh, Harold R. Walker, Joseph A. Cullity, Bohdan Stryzak
Patented Case
View Patent ↗
Granted: Apr 14, 1987
Filed: Oct 5, 1984
Inventors
William J. McKenna
Kenneth W. Silvers
Rand B. Nickerson
Russell J. Welsh
Harold R. Walker
Joseph A. Cullity
Bohdan Stryzak
Assignee (at issue)
CTBA Associates
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.