Granted Patent
Utility
US 5,450,122 · App. 07/796,008
In-station television program encoding and monitoring system and method
Inventor:
Leonard D. Keene
Patented Case
View Patent ↗
Granted: Sep 12, 1995
Filed: Nov 22, 1991
Inventor
Leonard D. Keene
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.