Granted Patent
Utility
US 4,422,920 · App. 06/284,879
Hydrogen cathode
Inventors:
John Z. O. Stachurski, Gerald F. Pokrzyk
Patented Case
View Patent ↗
Granted: Dec 27, 1983
Filed: Jul 20, 1981
Inventors
John Z. O. Stachurski
Gerald F. Pokrzyk
Assignee (at issue)
Occidental Chemical Corporation
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.