Granted Patent
Utility
US 4,922,754 · App. 07/395,193
Acoustic emission transducer and mounting adapter for monitoring metalcutting tools
Inventors:
John G. Horne, David Dornfeld, Keith A. McMillen
Patented Case
View Patent ↗
Granted: May 8, 1990
Filed: Aug 15, 1989
Inventors
John G. Horne
David Dornfeld
Keith A. McMillen
Assignee (at issue)
KENNAMETAL 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.