Granted Patent
Utility
US 5,310,312 · App. 07/993,148
Gas turbine test airfoil
Inventor:
Ronald B. Balfour
Patented Case
View Patent ↗
Granted: May 10, 1994
Filed: Dec 18, 1992
Inventor
Ronald B. Balfour
Assignee (at issue)
AlliedSignal, 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.