Granted Patent
Utility
US 6,520,828 · App. 10/036,280
Variable performance toys
Inventor:
Albert J. Ferrigno
Patented Case
View Patent ↗
Granted: Feb 18, 2003
Filed: Oct 24, 2001
Inventor
Albert J. Ferrigno
Assignee (at issue)
MATTEL, 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.