Granted Patent
Utility
US 6,231,709 · App. 09/217,514
Method of making a spring out of thermostructural composite material
Inventor:
Jean-Pierre Maumus
Patented Case
View Patent ↗
Granted: May 15, 2001
Filed: Dec 21, 1998
Inventor
Jean-Pierre Maumus
Assignee (at issue)
Societe Nationale d'Etude et de Construction de Moteurs d'Aviation - S.N.E.C.M.A
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.