Granted Patent
Utility
US 4,866,240 · App. 07/241,923
Nozzle for plasma torch and method for introducing powder into the plasma plume of a plasma torch
Inventor:
Roderick Webber
Patented Case
View Patent ↗
Granted: Sep 12, 1989
Filed: Sep 8, 1988
Inventor
Roderick Webber
Assignee (at issue)
Stoody Deloro Stellite, 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.