Granted Patent
Utility
US 6,594,441 · App. 09/452,354
Method and apparatus for video tag signal recovery using various techniques to regenerate and re-record the tag signal
Inventor:
James R. Holzgrafe
Patented Case
View Patent ↗
Granted: Jul 15, 2003
Filed: Dec 1, 1999
Inventor
James R. Holzgrafe
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.