Granted Patent
Utility
US 6,073,122 · App. 08/911,650
Cryptographic method and apparatus for restricting access to transmitted programming content using extended headers
Inventor:
Avishai Wool
Patented Case
View Patent ↗
Granted: Jun 6, 2000
Filed: Aug 15, 1997
Inventor
Avishai Wool
Assignee (at issue)
LUCENT TECHNOLOGIES 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.