Granted Patent
Utility
US 5,158,435 · App. 07/792,394
Impeller stress improvement through overspeed
Inventor:
Edward P. Eardley
Patented Case
View Patent ↗
Granted: Oct 27, 1992
Filed: Nov 15, 1991
Inventor
Edward P. Eardley
Assignee (at issue)
Praxair Technology, Inc.
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.