Granted Patent
Utility
US 5,250,355 · App. 07/808,837
Arc hardfacing rod
Inventors:
Harold C. Newman, Harold E. Kelley
Patented Case
View Patent ↗
Granted: Oct 5, 1993
Filed: Dec 17, 1991
Inventors
Harold C. Newman
Harold E. Kelley
Assignee (at issue)
KENNAMETAL INC.
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.