Granted Patent
Utility
US 4,414,043 · App. 06/341,737
Continuous decarburization annealing with recycle to convert carbon monoxide
Inventors:
Frank N. Davis, Harry H. Podgurski
Patented Case
View Patent ↗
Granted: Nov 8, 1983
Filed: Jan 22, 1982
Inventors
Frank N. Davis
Harry H. Podgurski
Assignee (at issue)
United States Steel 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.