Granted Patent
Utility
US 6,716,031 · App. 10/020,570
Interactive learning apparatus responsive to striking
Inventors:
Michael C. Wood, Jorge Soto
Patented Case
View Patent ↗
Granted: Apr 6, 2004
Filed: Dec 7, 2001
Inventors
Michael C. Wood
Jorge Soto
Assignee (at issue)
LeapFrog Enterprises, Inc.
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.