Granted Patent
Utility
US 5,711,642 · App. 08/642,129
Front-loading rotary ring cutter
Inventors:
Robert J. Ball, Martin John Lakey
Patented Case
View Patent ↗
Granted: Jan 27, 1998
Filed: May 2, 1996
Inventors
Robert J. Ball
Martin John Lakey
Assignee (at issue)
THE GLEASON WORKS
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.