Granted Patent
Utility
US 6,068,445 · App. 09/111,706
Cooling system for the leading-edge region of a hollow gas-turbine blade
Inventors:
Alexander Beeck, Bruce V. Johnson, Bernhard Weigand, Pey-Shey Wu
Patented Case
View Patent ↗
Granted: May 30, 2000
Filed: Jul 8, 1998
Inventors
Alexander Beeck
Bruce V. Johnson
Bernhard Weigand
Pey-Shey Wu
Assignee (at issue)
ABB RESEARCH LTD.
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.