Granted Patent
Utility
US 4,889,679 · App. 07/156,494
Eddy current probe apparatus having an expansible sleeve
Inventors:
David A. Snyder, Johnny J. Anderson
Patented Case
View Patent ↗
Granted: Dec 26, 1989
Filed: Feb 16, 1988
Inventors
David A. Snyder
Johnny J. Anderson
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.