Granted Patent
Utility
US 5,117,626 · App. 07/577,376
Apparatus for cooling rotating blades in a gas turbine
Inventors:
William E. North, Frank A. Pisz
Patented Case
View Patent ↗
Granted: Jun 2, 1992
Filed: Sep 4, 1990
Inventors
William E. North
Frank A. Pisz
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.