Granted Patent
Utility
US 4,466,841 · App. 06/533,414
Cathode electrode for an electrical device and method of making same
Inventor:
Charles W. Walters
Patented Case
View Patent ↗
Granted: Aug 21, 1984
Filed: Sep 19, 1983
Inventor
Charles W. Walters
Assignee (at issue)
Emhart Industries, Inc.
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.