Granted Patent
Utility
US 4,598,318 · App. 06/502,958
Video encryption system
Inventor:
Clyde Robbins
Patented Case
View Patent ↗
Granted: Jul 1, 1986
Filed: Jun 10, 1983
Inventor
Clyde Robbins
Assignee (at issue)
General Instrument 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.