Granted Patent
Utility
US 6,459,795 · App. 09/233,922
Method and apparatus for enhancing the scrambling of a TV signal via erroneous clamp signals
Inventor:
Ronald Quan
Patented Case
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Granted: Oct 1, 2002
Filed: Jan 20, 1999
Inventor
Ronald Quan
Assignee (at issue)
Macrovision 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.