Granted Patent
Utility
US 4,450,612 · App. 06/314,213
Swaging apparatus for radially expanding tubes to form joints
Inventor:
John W. Kelly
Patented Case
View Patent ↗
Granted: May 29, 1984
Filed: Oct 23, 1981
Inventor
John W. Kelly
Assignee (at issue)
Haskel, 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.