Granted Patent
Utility
US 4,722,668 · App. 06/898,338
Device for damping blade vibrations in turbo-machines
Inventor:
Peter Novacek
Patented Case
View Patent ↗
Granted: Feb 2, 1988
Filed: Aug 20, 1986
Inventor
Peter Novacek
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.