Granted Patent
Utility
US 6,751,398 · App. 09/745,915
System and method for determining whether a video program has been previously recorded
Inventors:
Lalitha Agnihotri, Thomas McGee
Patented Case
View Patent ↗
Granted: Jun 15, 2004
Filed: Dec 22, 2000
Inventors
Lalitha Agnihotri
Thomas McGee
Assignee (at issue)
KONINKLIJKE PHILIPS ELECTRONICS NV
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.