Granted Patent
Utility
US 5,439,640 · App. 08/116,651
Controlled thermal expansion superalloy
Inventors:
Karl A. Heck, Melissa A. Moore, Darrell F. Smith, Jr., Larry I. Stein, John S. Smith
Patented Case
View Patent ↗
Granted: Aug 8, 1995
Filed: Sep 3, 1993
Inventors
Karl A. Heck
Melissa A. Moore
Darrell F. Smith, Jr.
Larry I. Stein
John S. Smith
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.