Granted Patent
Utility
US 4,838,014 · App. 07/099,971
Disc cutter rotor assembly
Inventors:
Earl E. Koch, Franja F. Voler, Edmund O. Howell
Patented Case
View Patent ↗
Granted: Jun 13, 1989
Filed: Sep 23, 1987
Inventors
Earl E. Koch
Franja F. Voler
Edmund O. Howell
Assignee (at issue)
Ford New Holland, 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.