Granted Patent
Utility
US 6,358,053 · App. 09/510,042
Interactive online language instruction
Inventors:
Andrew M. Rosenfield, Edwin Eisendrath, Brian M. Freeman, Maximilian A. Grant, Enio Ohmaye, Patrick Keating
Patented Case
View Patent ↗
Granted: Mar 19, 2002
Filed: Feb 22, 2000
Inventors
Andrew M. Rosenfield
Edwin Eisendrath
Brian M. Freeman
Maximilian A. Grant
Enio Ohmaye
Patrick Keating
Assignee (at issue)
UNext.com LLC
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.