Granted Patent
Utility
US 4,466,447 · App. 06/507,029
Tailings return to threshing section or to cleaning section
Inventors:
Wayne A. Hoefer, Garry W. Busboom
Patented Case
View Patent ↗
Granted: Aug 21, 1984
Filed: Jun 23, 1983
Inventors
Wayne A. Hoefer
Garry W. Busboom
Assignee (at issue)
Allis-Chalmers Corporation
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.