Granted Patent
Utility
US 6,224,328 · App. 09/371,904
Turbomachine with cooled rotor shaft
Inventors:
Bernhard Weigand, Conor Fitzsimons, Wolfgang Kappis, Hans Wettstein
Patented Case
View Patent ↗
Granted: May 1, 2001
Filed: Aug 11, 1999
Inventors
Bernhard Weigand
Conor Fitzsimons
Wolfgang Kappis
Hans Wettstein
Assignee (at issue)
Asea Brown Boveri, S.A.
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.