Granted Patent
Utility
US 4,995,080 · App. 07/552,375
Television signal scrambling system and method
Inventors:
Caitlin Bestler, Richard W. Citta, Michael Long
Patented Case
View Patent ↗
Granted: Feb 19, 1991
Filed: Jul 16, 1990
Inventors
Caitlin Bestler
Richard W. Citta
Michael Long
Assignee (at issue)
Zenith Electronics LLC
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.