Granted Patent
Utility
US 5,933,952 · App. 08/914,186
Process for manufacturing a hollow turbomachine blade and progressive hot twisting apparatus for use in said process
Inventors:
Mathieu Philippe Albert Bichon, Bernard Armand Rene Costeplane, Alain Lorieux
Patented Case
View Patent ↗
Granted: Aug 10, 1999
Filed: Aug 19, 1997
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.