Granted Patent
Utility
US 4,631,386 · App. 06/610,316
Welding head apparatus
Inventor:
Clyde M. Slavens
Patented Case
View Patent ↗
Granted: Dec 23, 1986
Filed: May 14, 1984
Inventor
Clyde M. Slavens
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.