Granted Patent
Utility
US 4,544,457 · App. 06/505,229
Dimensionally stable drained aluminum electrowinning cathode method and apparatus
Inventors:
Ajit Sane, Douglas J. Wheeler, Charles S. Kuivila
Patented Case
View Patent ↗
Granted: Oct 1, 1985
Filed: Jun 17, 1983
Inventors
Ajit Sane
Douglas J. Wheeler
Charles S. Kuivila
Assignee (at issue)
Eltech Systems 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.