Granted Patent
Utility
US 6,607,388 · App. 10/126,857
Sequence learning toy
Inventor:
Mary Ann Cogliano
Patented Case
View Patent ↗
Granted: Aug 19, 2003
Filed: Apr 18, 2002
Inventor
Mary Ann Cogliano
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.