Granted Patent
Utility
US 5,197,231 · App. 07/805,125
Rotary cutter having expanded cutting ring
Inventors:
Harry Pedersen, Richard Johnstone, Richard L. Kitchen
Patented Case
View Patent ↗
Granted: Mar 30, 1993
Filed: Dec 11, 1991
Inventors
Harry Pedersen
Richard Johnstone
Richard L. Kitchen
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.