Granted Patent
Utility
US 4,550,485 · App. 06/579,559
Methods and apparatus for installing a radially applied retaining ring into an external groove of a workpiece
Inventor:
Edmund F. Killian
Patented Case
View Patent ↗
Granted: Nov 5, 1985
Filed: Feb 13, 1984
Inventor
Edmund F. Killian
Assignee (at issue)
Waldes Kohinoor, 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.