Granted Patent
Utility
US 4,422,333 · App. 06/385,661
Method and apparatus for detecting and identifying excessively vibrating blades of a turbomachine
Inventor:
Robert L. Leon
Patented Case
View Patent ↗
Granted: Dec 27, 1983
Filed: Apr 29, 1982
Inventor
Robert L. Leon
Assignee (at issue)
The Franklin Institute
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.