Granted Patent
Utility
US 5,340,457 · App. 08/053,743
Electrolytic cell
Inventors:
James M. Ford, David W. Cawlfield
Patented Case
View Patent ↗
Granted: Aug 23, 1994
Filed: Apr 29, 1993
Inventors
James M. Ford
David W. Cawlfield
Assignee (at issue)
Olin 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.