Granted Patent
Utility
US 6,038,289 · App. 09/132,972
Redundant video alarm monitoring system
Inventor:
Mack Sands
Patented Case
View Patent ↗
Granted: Mar 14, 2000
Filed: Aug 12, 1998
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.