Granted Patent
Utility
US 5,862,201 · App. 08/712,980
Redundant alarm monitoring system
Inventor:
Mack Sands
Patented Case
View Patent ↗
Granted: Jan 19, 1999
Filed: Sep 12, 1996
Inventor
Mack Sands
Assignee (at issue)
Simplex Time Recorder Co.
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.