Granted Patent
Utility
US 5,694,820 · App. 08/575,712
Tool unit clamping apparatus having improved short stroke locking mechanism
Inventors:
Robert A. Erickson, Greg W. Needham
Patented Case
View Patent ↗
Granted: Dec 9, 1997
Filed: Dec 20, 1995
Inventors
Robert A. Erickson
Greg W. Needham
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.