Granted Patent
Utility
US 4,249,944 · App. 06/028,541
Method of making electrical contact material
Inventor:
Gerald J. Witter
Patented Case
View Patent ↗
Granted: Feb 10, 1981
Filed: Apr 9, 1979
Inventor
Gerald J. Witter
Assignee (at issue)
Fansteel 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.