Granted Patent
Utility
US 6,662,889 · App. 09/826,209
Wheeled platforms
Inventors:
Thomas L. De Fazio, David S. Barrett, Chikyung Won, Selma Slipichevich
Patented Case
View Patent ↗
Granted: Dec 16, 2003
Filed: Apr 4, 2001
Inventors
Thomas L. De Fazio
David S. Barrett
Chikyung Won
Selma Slipichevich
Assignee (at issue)
iRobot 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.