Granted Patent
Utility
US 4,618,777 · App. 06/673,110
Outer electrode with improved smoke entry
Inventors:
George A. Schoenfelder, Stephen L. Siegel, James S. Slater
Patented Case
View Patent ↗
Granted: Oct 21, 1986
Filed: Nov 19, 1984
Inventors
George A. Schoenfelder
Stephen L. Siegel
James S. Slater
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.