Granted Patent
Utility
US 5,594,934 · App. 08/309,804
Real time correlation meter
Inventors:
Daozheng Lu, Barry Cook
Patented Case
View Patent ↗
Granted: Jan 14, 1997
Filed: Sep 21, 1994
Inventors
Daozheng Lu
Barry Cook
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.