Granted Patent
Utility
US 4,809,995 · App. 07/134,346
Quick-change mechanism with eccentric lock
Inventor:
Valdas S. Ramunas
Patented Case
View Patent ↗
Granted: Mar 7, 1989
Filed: Dec 17, 1987
Inventor
Valdas S. Ramunas
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.