Granted Patent
Utility
US 4,155,759 · App. 05/935,644
Hard facing of metal substrates
Inventor:
Harry J. Brown
Patented Case
View Patent ↗
Granted: May 22, 1979
Filed: Aug 21, 1978
Inventor
Harry J. 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.