Granted Patent
Utility
US 4,900,635 · App. 07/307,923
Multi-alloy turbine rotor disk
Inventors:
Kim E. Bowen, Steven M. Foster, Said Izadi
Patented Case
View Patent ↗
Granted: Feb 13, 1990
Filed: Feb 9, 1989
Inventors
Kim E. Bowen
Steven M. Foster
Said Izadi
Assignee (at issue)
WILLIAMS INTERNATIONAL CO., L.L.C.
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.