Granted Patent
Utility
US 4,242,563 · App. 05/917,837
Automatic plug welding apparatus
Inventor:
Raymond H. Glatthorn
Patented Case
View Patent ↗
Granted: Dec 30, 1980
Filed: Jun 22, 1978
Inventor
Raymond H. Glatthorn
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.