Granted Patent
Utility
US 4,872,957 · App. 07/221,854
Electrochemical cell having dual purpose electrode
Inventors:
Dennis F. Dong, Edward B. Noonan, Derek J. Rogers, Arthur L. Clifford, Katharina Benesch, Richard E. Loftfield
Patented Case
View Patent ↗
Granted: Oct 10, 1989
Filed: Jul 20, 1988
Inventors
Dennis F. Dong
Edward B. Noonan
Derek J. Rogers
Arthur L. Clifford
Katharina Benesch
Richard E. Loftfield
Assignee (at issue)
H-D Tech 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.