Granted Patent
Utility
US 5,290,144 · App. 07/951,839
Shroud ring for an axial flow turbine
Inventor:
Franz Kreitmeier
Patented Case
View Patent ↗
Granted: Mar 1, 1994
Filed: Sep 28, 1992
Inventor
Franz Kreitmeier
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.