Granted Patent
Utility
US 5,624,232 · App. 08/540,130
Device for controlling the pitch of the blades of a rotorcraft rotor
Inventor:
Nicolas Certain
Patented Case
View Patent ↗
Granted: Apr 29, 1997
Filed: Oct 6, 1995
Inventor
Nicolas Certain
Assignee (at issue)
Eurocopter France
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.