Granted Patent
Utility
US 4,707,604 · App. 06/790,457
Ceiling mountable passive infrared intrusion detection system
Inventor:
John K. Guscott
Patented Case
View Patent ↗
Granted: Nov 17, 1987
Filed: Oct 23, 1985
Inventor
John K. Guscott
Assignee (at issue)
ADT Holdings, 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.