Granted Patent
Utility
US 5,059,765 · App. 07/474,001
Method of operation for high speed automatic welding
Inventor:
Brian Laing
Patented Case
View Patent ↗
Granted: Oct 22, 1991
Filed: Jan 4, 1990
Inventor
Brian Laing
Assignee (at issue)
CRC-EVANS PIPELINE 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.