Granted Patent
Utility
US 4,650,722 · App. 06/561,655
Hard faced article
Inventors:
Harry J. Brown, William D. Forgeng, Charles M. Brown
Patented Case
View Patent ↗
Granted: Mar 17, 1987
Filed: Dec 15, 1983
Inventors
Harry J. Brown
William D. Forgeng
Charles M. 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.