Granted Patent
Utility
US 6,426,574 · App. 09/565,548
Rotor of a turbogenerator having direct gas cooling incorporating a two-stage flow cascade
Inventors:
Stephan Hess, Christoph Hirsch, Michael Jung, Johann Schubert, Hans Zimmerman
Patented Case
View Patent ↗
Granted: Jul 30, 2002
Filed: May 5, 2000
Inventors
Stephan Hess
Christoph Hirsch
Michael Jung
Johann Schubert
Hans Zimmerman
Assignee (at issue)
ALSTOM Holdings
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.