Granted Patent
Utility
US 6,413,009 · App. 09/707,501
Vehicular traffic barrier system
Inventor:
John W. Duckett
Patented Case
View Patent ↗
Granted: Jul 2, 2002
Filed: Nov 6, 2000
Inventor
John W. Duckett
Assignee (at issue)
Barrier Systems, 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.