Granted Patent
Utility
US 5,823,579 · App. 08/861,203
Device for coupling a flared metal pipe
Inventor:
Gary Mackay
Patented Case
View Patent ↗
Granted: Oct 20, 1998
Filed: May 21, 1997
Inventor
Gary Mackay
Assignee (at issue)
TUBE-MAC INDUSTRIES, LTD.
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.