Granted Patent
Utility
US 4,333,803 · App. 06/193,597
Method and apparatus for controlling the heat balance in aluminum reduction cells
Inventors:
Edward J. Seger, Warren E. Haupin
Patented Case
View Patent ↗
Granted: Jun 8, 1982
Filed: Oct 3, 1980
Inventors
Edward J. Seger
Warren E. Haupin
Assignee (at issue)
Aluminum Company of America
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.