Granted Patent
Utility
US 6,336,813 · App. 09/002,999
Computer-assisted education using video conferencing
Inventor:
David M. Siefert
Patented Case
View Patent ↗
Granted: Jan 8, 2002
Filed: Jan 5, 1998
Inventor
David M. Siefert
Assignee (at issue)
NCR 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.