Granted Patent
Utility
US 5,503,218 · App. 08/371,867
Method of making a shell mould from a ceramic material for a disposable pattern casting process
Inventors:
Isabelle M. M. Campion, Christian Marty
Patented Case
View Patent ↗
Granted: Apr 2, 1996
Filed: Jan 12, 1995
Inventors
Isabelle M. M. Campion
Christian Marty
Assignee (at issue)
Societe Nationale d'Etude et de Moteurs d'Aviation Snecma
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.