Granted Patent
Utility
US 4,540,225 · App. 06/529,916
Swivel cable coupling for an air carbon-arc cutting and gouging torch
Inventors:
David E. Johnson, Kenneth E. McCall
Patented Case
View Patent ↗
Granted: Sep 10, 1985
Filed: Sep 7, 1983
Inventors
David E. Johnson
Kenneth E. McCall
Assignee (at issue)
Arcair Company
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.