Granted Patent
Utility
US 5,684,458 · App. 08/605,472
Microwave sensor with adjustable sampling frequency based on environmental conditions
Inventor:
Russell Calvarese
Patented Case
View Patent ↗
Granted: Nov 4, 1997
Filed: Feb 26, 1996
Inventor
Russell Calvarese
Assignee (at issue)
NAPCO Security Systems, 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.