Granted Patent
Utility
US 6,307,474 · App. 09/643,463
Magnetomechanical electronic article surveillance system and method using sideband detection
Inventors:
Ming-Ren Lian, Hubert A. Patterson
Patented Case
View Patent ↗
Granted: Oct 23, 2001
Filed: Aug 22, 2000
Inventors
Ming-Ren Lian
Hubert A. Patterson
Assignee (at issue)
Sensormatic Electronics, LLC
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.