Granted Patent
Utility
US 5,661,801 · App. 08/388,560
Method and apparatus for stabilizing and brightening prerecorded TV signals encoded with copy protection
Inventor:
Martin Sperber
Patented Case
View Patent ↗
Granted: Aug 26, 1997
Filed: Feb 14, 1995
Inventor
Martin Sperber
Assignee (at issue)
HSN Marketing 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.