Granted Patent
Utility
US 5,534,849 · App. 08/351,566
Time multiplexed, false alarm resistant magnetically actuated security system
Inventors:
Kevin B. McDonald, Stephen W. Pierce, Michael Benowitz, David S. Terrett
Patented Case
View Patent ↗
Granted: Jul 9, 1996
Filed: Dec 6, 1994
Inventors
Kevin B. McDonald
Stephen W. Pierce
Michael Benowitz
David S. Terrett
Assignee (at issue)
Sentrol, 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.