Granted Patent
Utility
US 6,133,829 · App. 09/263,162
Walk-through metal detector system and method
Inventors:
James Christian Johnstone, Sidney Glenn Freshour
Patented Case
View Patent ↗
Granted: Oct 17, 2000
Filed: Mar 5, 1999
Inventors
James Christian Johnstone
Sidney Glenn Freshour
Assignee (at issue)
FRL, 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.