Granted Patent
Utility
US 5,215,431 · App. 07/904,024
Cooled turbine guide vane
Inventor:
Mischael F. L. Derrien
Patented Case
View Patent ↗
Granted: Jun 1, 1993
Filed: Jun 25, 1992
Inventor
Mischael F. L. Derrien
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.