Granted Patent
Utility
US 6,191,688 · App. 09/273,579
Power-on mask detection method for motion detectors
Inventor:
William T. Sprouse
Patented Case
View Patent ↗
Granted: Feb 20, 2001
Filed: Mar 22, 1999
Inventor
William T. Sprouse
Assignee (at issue)
HONEYWELL INTERNATIONAL 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.