Granted Patent
Utility
US 6,242,715 · App. 09/290,996
Progressive hot twisting apparatus for use in a process for manufacturing a hollow turbomachine blade
Inventors:
Mathieu Philippe Albert Bichon, Bernard Armand Rene Costeplane, Alain Lorieux
Patented Case
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Granted: Jun 5, 2001
Filed: Apr 14, 1999
Inventors
Mathieu Philippe Albert Bichon
Bernard Armand Rene Costeplane
Alain Lorieux
Assignees (at issue)
Societe Nationale d'Etude et de Construction de Moteurs d'Aviation - S.N.E.C.M.A
Etablissements Robert Creuzet
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.