Granted Patent
Utility
US 4,958,431 · App. 07/325,759
More creep resistant turbine rotor, and procedures for repair welding of low alloy ferrous turbine components
Inventors:
Robert E. Clark, Dennis R. Amos
Patented Case
View Patent ↗
Granted: Sep 25, 1990
Filed: Mar 20, 1989
Inventors
Robert E. Clark
Dennis R. Amos
Assignee (at issue)
Westinghouse Electric Company LLC
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.