Granted Patent
Utility
US 4,268,740 · App. 06/014,480
Flex head welding torch having disc spring biasing elements
Inventor:
Harold D. Sanders
Patented Case
View Patent ↗
Granted: May 19, 1981
Filed: Feb 23, 1979
Inventor
Harold D. Sanders
Assignee (at issue)
Central Welding Supply Co., 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.