Granted Patent
Utility
US 6,712,313 · App. 10/392,644
Constant velocity drive rotary-wing aircraft rotor with torque splitting differential
Inventors:
Elio Zoppitelli, Eric Cornille
Patented Case
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Granted: Mar 30, 2004
Filed: Mar 20, 2003
Inventors
Elio Zoppitelli
Eric Cornille
Assignee (at issue)
EUROCOPTER
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.