Granted Patent
Utility
US 4,586,249 · App. 06/567,107
Mandrel having an eddy current probe
Inventors:
Annette M. Costlow, David A. Chizmar, Frank W. Cooper, Jr.
Patented Case
View Patent ↗
Granted: May 6, 1986
Filed: Dec 30, 1983
Inventors
Annette M. Costlow
David A. Chizmar
Frank W. Cooper, Jr.
Assignee (at issue)
Westinghouse Electric Company LLC
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.