Granted Patent
Utility
US 4,699,569 · App. 06/877,123
Rotor blade ring of an axial flow turbomachine
Inventor:
Kurt Gloor
Patented Case
View Patent ↗
Granted: Oct 13, 1987
Filed: Jun 23, 1986
Inventor
Kurt Gloor
Assignee (at issue)
BBC Brown, Boveri & Company 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.