Granted Patent
Utility
US 4,916,270 · App. 07/306,669
Mig welder cutting head attachment
Inventors:
John C. West, Terry A. Prentice
Patented Case
View Patent ↗
Granted: Apr 10, 1990
Filed: Feb 6, 1989
Inventors
John C. West
Terry A. Prentice
Assignee (at issue)
Scepter Manufacturing, 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.