Granted Patent
Utility
US 5,494,209 · App. 08/300,001
Method for the manufacture of an internally enhanced welded tubing
Inventors:
Myron R. Randlett, Jerome M. Dupy
Patented Case
View Patent ↗
Granted: Feb 27, 1996
Filed: Sep 1, 1994
Inventors
Myron R. Randlett
Jerome M. Dupy
Assignee (at issue)
Olin Corporation
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.