Granted Patent
Utility
US 4,473,983 · App. 06/243,016
Anchoring refractory materials to a refractory lining
Inventor:
Macy W. Vance
Patented Case
View Patent ↗
Granted: Oct 2, 1984
Filed: Mar 12, 1981
Inventor
Macy W. Vance
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.