Granted Patent
Utility
US 5,348,212 · App. 08/181,992
Welding method for rotatable shafts
Inventor:
George W. Galanes
Patented Case
View Patent ↗
Granted: Sep 20, 1994
Filed: Jan 14, 1994
Inventor
George W. Galanes
Assignee (at issue)
Commonwealth Edison Company
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.