Granted Patent
Utility
US 4,797,918 · App. 07/039,824
Subscription control for television programming
Inventors:
Lin-Nan Lee, Neal Becker
Patented Case
View Patent ↗
Granted: Jan 10, 1989
Filed: Apr 15, 1987
Inventors
Lin-Nan Lee
Neal Becker
Assignee (at issue)
Communications Satellite Corporation
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.