Granted Patent
Utility
US 6,477,253 · App. 09/229,685
Method and apparatus for television signal scrambling using vertical sync replacement
Inventors:
Timothy D. Rea, Alfred Stufflet, Kevin T. Chang
Patented Case
View Patent ↗
Granted: Nov 5, 2002
Filed: Jan 13, 1999
Inventors
Timothy D. Rea
Alfred Stufflet
Kevin T. Chang
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.