Granted Patent
Utility
US 5,609,472 · App. 08/509,854
Rotor blade for a rotary-wing aircraft
Inventors:
Masahiro Obukata, Masaaki Nakadate
Patented Case
View Patent ↗
Granted: Mar 11, 1997
Filed: Aug 1, 1995
Inventors
Masahiro Obukata
Masaaki Nakadate
Assignee (at issue)
Fuji Jukogyo Kabushiki Kaisha
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.