Granted Patent
Utility
US 5,385,442 · App. 08/160,419
Centrifugal pump with an open-faced impeller
Inventors:
Jean-Robert Lehe, Andre Beaurain, Rene Bosson, Etienne Tiret
Patented Case
View Patent ↗
Granted: Jan 31, 1995
Filed: Nov 24, 1993
Inventors
Jean-Robert Lehe
Andre Beaurain
Rene Bosson
Etienne Tiret
Assignee (at issue)
Societe Europenne de Propulsion
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.