Granted Patent
Utility
US 4,415,532 · App. 06/240,642
Cobalt superalloy
Inventor:
Paul Anthony Crook
Patented Case
View Patent ↗
Granted: Nov 15, 1983
Filed: Mar 5, 1981
Inventor
Paul Anthony Crook
Assignee (at issue)
Cabot 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.