Granted Patent
Utility
US 5,099,098 · App. 07/365,624
Welding apparatus and method for welding a joint between abutting circular workpieces
Inventor:
Charles E. Burgoon
Patented Case
View Patent ↗
Granted: Mar 24, 1992
Filed: Jun 13, 1989
Inventor
Charles E. Burgoon
Assignee (at issue)
Westinghouse Electric Company LLC
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.