Granted Patent
Utility
US 4,866,420 · App. 07/186,155
Method of detecting a fire of open uncontrolled flames
Inventor:
Robert Hornblower Meyer
Patented Case
View Patent ↗
Granted: Sep 12, 1989
Filed: Apr 26, 1988
Inventor
Robert Hornblower Meyer
Assignee (at issue)
Systron Donner 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.