Granted Patent
Utility
US 6,726,471 · App. 09/939,850
Flashback arrestor for use with head of Oxy-fuel torch
Inventors:
Nigel Parkin, John Onorato, Paul Mercuri
Patented Case
View Patent ↗
Granted: Apr 27, 2004
Filed: Aug 27, 2001
Inventors
Nigel Parkin
John Onorato
Paul Mercuri
Assignee (at issue)
THE ESAB GROUP 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.