Granted Patent
Utility
US 4,639,576 · App. 06/871,128
Welding electrode
Inventors:
Lewis E. Shoemaker, Thomas O. Bates
Patented Case
View Patent ↗
Granted: Jan 27, 1987
Filed: May 30, 1986
Inventors
Lewis E. Shoemaker
Thomas O. Bates
Assignee (at issue)
INCO Alloys International, 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.