Granted Patent
Utility
US 5,403,547 · App. 08/227,296
Oxidation resistant low expansion superalloys
Inventors:
John S. Smith, Darrell F. Smith, Jr., Roneldo L. Fisher, Karl A. Heck
Patented Case
View Patent ↗
Granted: Apr 4, 1995
Filed: Apr 13, 1994
Inventors
John S. Smith
Darrell F. Smith, Jr.
Roneldo L. Fisher
Karl A. Heck
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.