Granted Patent
Utility
US 4,173,497 · App. 05/929,352
Amorphous lead dioxide photovoltaic generator
Inventors:
Ferenc J. Schmidt, Jacob F. Betz
Patented Case
View Patent ↗
Granted: Nov 6, 1979
Filed: Jul 31, 1978
Inventors
Ferenc J. Schmidt
Jacob F. Betz
Assignee (at issue)
Ametek, 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.