Granted Patent
Utility
US 4,823,051 · App. 07/052,763
Infrared actuated control switch assembly
Inventor:
William Young
Patented Case
View Patent ↗
Granted: Apr 18, 1989
Filed: May 21, 1987
Inventor
William Young
Assignee (at issue)
Pittway Corporation
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.