Granted Patent
Utility
US 5,870,935 · App. 08/725,388
Self-locking clamping apparatus for coupling a tool unit to a tool supporter
Inventors:
Robert A. Erickson, Horst Manfred Jäger
Patented Case
View Patent ↗
Granted: Feb 16, 1999
Filed: Oct 3, 1996
Inventors
Robert A. Erickson
Horst Manfred Jäger
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.