Granted Patent
Utility
US 5,864,621 · App. 08/662,504
Broadband television scrambling and descrambling system
Inventor:
Ron D. Katznelson
Patented Case
View Patent ↗
Granted: Jan 26, 1999
Filed: Jun 12, 1996
Inventor
Ron D. Katznelson
Assignee (at issue)
Multichannel Communication Sciences, 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.