Granted Patent
Utility
US 4,885,217 · App. 07/070,183
Air cathodes and materials therefor
Inventor:
William H. Hoge
Patented Case
View Patent ↗
Granted: Dec 5, 1989
Filed: Jul 6, 1987
Inventor
William H. Hoge
Assignee (at issue)
Alupower, 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.