Granted Patent
Utility
US 4,930,980 · App. 07/310,554
Cooled turbine vane
Inventors:
William E. North, David T. Entenmann, John P. Donlan
Patented Case
View Patent ↗
Granted: Jun 5, 1990
Filed: Feb 15, 1989
Inventors
William E. North
David T. Entenmann
John P. Donlan
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.