Granted Patent
Utility
US 6,424,717 · App. 09/464,794
Encryption devices for use in a conditional access system
Inventors:
Howard G. Pinder, Michael S. Palgon
Patented Case
View Patent ↗
Granted: Jul 23, 2002
Filed: Dec 16, 1999
Inventors
Howard G. Pinder
Michael S. Palgon
Assignee (at issue)
Scientific-Atlanta, Inc.
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.