Granted Patent
Utility
US 4,214,969 · App. 06/000,489
Low cost bipolar current collector-separator for electrochemical cells
Inventor:
Richard J. Lawrance
Patented Case
View Patent ↗
Granted: Jul 29, 1980
Filed: Jan 2, 1979
Inventor
Richard J. Lawrance
Assignee (at issue)
General Electric Company
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.