Granted Patent
Utility
US 4,447,307 · App. 06/450,136
Electrowinning cell having partially shielded anodes
Inventors:
Larry A. Davis, Gregory H. Boyce, Timothy P. Mulloy, Neil Nebeker, Elmer C. Newman, Donald J. Quinn, David L. Adamson
Patented Case
View Patent ↗
Granted: May 8, 1984
Filed: Dec 15, 1982
Inventors
Larry A. Davis
Gregory H. Boyce
Timothy P. Mulloy
Neil Nebeker
Elmer C. Newman
Donald J. Quinn
David L. Adamson
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.