Granted Patent
Utility
US 4,443,255 · App. 06/319,324
Hard facing of metal substrates
Inventors:
Harry J. Brown, William D. Forgeng, Charles W. Brown
Patented Case
View Patent ↗
Granted: Apr 17, 1984
Filed: Nov 9, 1981
Inventors
Harry J. Brown
William D. Forgeng
Charles W. Brown
Assignee (at issue)
Union Carbide 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.