Granted Patent
Utility
US 4,668,312 · App. 06/711,186
Turbine blade superalloy I
Inventors:
Raymond C. Benn, Jeffrey M. Davidson, Kenneth R. Andryszak
Patented Case
View Patent ↗
Granted: May 26, 1987
Filed: Mar 13, 1985
Inventors
Raymond C. Benn
Jeffrey M. Davidson
Kenneth R. Andryszak
Assignee (at issue)
INCO Alloys International, 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.