Granted Patent
Utility
US 4,208,652 · App. 05/942,467
Method and apparatus for identifying images
Inventor:
Robert A. Marshall
Patented Case
View Patent ↗
Granted: Jun 17, 1980
Filed: Sep 14, 1978
Inventor
Robert A. Marshall
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.