Granted Patent
Utility
US 6,764,280 · App. 10/090,359
Multi-bladed tail rotor hub design for coriolis relief
Inventors:
Ajay Sehgal, Cecil E. Covington, David A. Haynie, Joseph John Zierer, Eric Boyle
Patented Case
View Patent ↗
Granted: Jul 20, 2004
Filed: Mar 4, 2002
Inventors
Ajay Sehgal
Cecil E. Covington
David A. Haynie
Joseph John Zierer
Eric Boyle
Assignee (at issue)
Bell Helicopter Textron 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.