Granted Patent
Utility
US 6,680,554 · App. 09/988,263
Aircraft, particularly a helicopter, transmission system
Inventors:
Thomasz Krysinski, Bérengère Vignal
Patented Case
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Granted: Jan 20, 2004
Filed: Nov 19, 2001
Inventors
Thomasz Krysinski
Bérengère Vignal
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.