Granted Patent
Utility
US 4,302,753 · App. 05/872,444
Multi-function combustion detecting device
Inventor:
Frederick J. Conforti
Patented Case
View Patent ↗
Granted: Nov 24, 1981
Filed: Jan 26, 1978
Inventor
Frederick J. Conforti
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.