Granted Patent
Utility
US 4,396,482 · App. 06/307,374
Composite cathode
Inventors:
Subodh K. Das, Perry A. Foster, Jr., Gregory J. Hildeman
Patented Case
View Patent ↗
Granted: Aug 2, 1983
Filed: Oct 1, 1981
Inventors
Subodh K. Das
Perry A. Foster, Jr.
Gregory J. Hildeman
Assignee (at issue)
Aluminum Company of America
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.