Granted Patent
Utility
US 6,439,848 · App. 09/739,283
Drilled cooling air openings in gas turbine components
Inventors:
Hartmut Haehnle, Bernhard Weigand
Patented Case
View Patent ↗
Granted: Aug 27, 2002
Filed: Dec 19, 2000
Inventors
Hartmut Haehnle
Bernhard Weigand
Assignee (at issue)
ALSTOM (Switzerland) 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.