Granted Patent
Utility
US 4,972,504 · App. 07/501,316
Marketing research system and method for obtaining retail data on a real time basis
Inventors:
James Daniel, Thomas F. Busyn, Brent T. Batterman
Patented Case
View Patent ↗
Granted: Nov 20, 1990
Filed: Mar 20, 1990
Inventors
James Daniel
Thomas F. Busyn
Brent T. Batterman
Assignee (at issue)
A.C. Nielsen Company
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.