Granted Patent
Utility
US 5,217,545 · App. 07/889,556
Heater sheath alloy
Inventors:
Gaylord D. Smith, Walter H. Wendler, David B. O'Donnell
Patented Case
View Patent ↗
Granted: Jun 8, 1993
Filed: May 27, 1992
Inventors
Gaylord D. Smith
Walter H. Wendler
David B. O'Donnell
Assignee (at issue)
INCO Alloys International, 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.