Granted Patent
Utility
US 5,969,714 · App. 08/528,907
Interactive video system with frame reference number
Inventor:
John Butcher
Patented Case
View Patent ↗
Granted: Oct 19, 1999
Filed: Nov 27, 1995
Inventor
John Butcher
Assignee (at issue)
Nortel Networks Limited
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.