Granted Patent
Utility
US 4,513,684 · App. 06/452,224
Upstream cathode assembly
Inventors:
Prem Nath, Masatsugu Izu
Patented Case
View Patent ↗
Granted: Apr 30, 1985
Filed: Dec 22, 1982
Inventors
Prem Nath
Masatsugu Izu
Assignee (at issue)
Energy Conversion Devices, 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.