Granted Patent
Utility
US 4,576,642 · App. 06/632,385
Alloy composition and process
Inventor:
Frederick C. Holtz, Jr.
Patented Case
View Patent ↗
Granted: Mar 18, 1986
Filed: Jul 19, 1984
Inventor
Frederick C. Holtz, Jr.
Assignee (at issue)
Crucible Materials 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.