Granted Patent
Utility
US 4,733,045 · App. 06/938,975
Method of and structure for high speed resistance seam welding
Inventor:
John F. Farrow
Patented Case
View Patent ↗
Granted: Mar 22, 1988
Filed: Dec 8, 1986
Inventor
John F. Farrow
Assignee (at issue)
Medar, 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.