Granted Patent
Utility
US 4,685,396 · App. 06/767,918
Method and apparatus for safer remotely controlled firing of ignition elements
Inventors:
Alan D. Birse, Alan G. King
Patented Case
View Patent ↗
Granted: Aug 11, 1987
Filed: Aug 21, 1985
Inventors
Alan D. Birse
Alan G. King
Assignee (at issue)
IMPERIAL CHEMICAL INDUSTRIES LIMITED
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.