Granted Patent
Utility
US 4,366,391 · App. 06/237,766
Fuel burner control system circuits
Inventor:
Alan Brightwell
Patented Case
View Patent ↗
Granted: Dec 28, 1982
Filed: Feb 24, 1981
Inventor
Alan Brightwell
Assignee (at issue)
British Gas
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.