Granted Patent
Utility
US 6,679,121 · App. 09/994,380
Blade vibration test apparatus and method
Inventors:
H. Eric Sonnichsen, Paul Wawrzonek, Richard B. Connell, Borislav Milatovic
Patented Case
View Patent ↗
Granted: Jan 20, 2004
Filed: Nov 6, 2001
Inventors
H. Eric Sonnichsen
Paul Wawrzonek
Richard B. Connell
Borislav Milatovic
Assignee (at issue)
Test Devices, Inc.
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.