Granted Patent
Utility
US 4,944,444 · App. 07/467,321
Welding or burning shield
Inventor:
James S. Renner
Patented Case
View Patent ↗
Granted: Jul 31, 1990
Filed: Jan 18, 1990
Inventor
James S. Renner
Assignee (at issue)
M-K Ferguson 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.