Granted Patent
Utility
US 4,906,218 · App. 07/225,966
Distribution trough extensions for agricultural harvester
Inventor:
Michael L. Huhman
Patented Case
View Patent ↗
Granted: Mar 6, 1990
Filed: Jul 29, 1988
Inventor
Michael L. Huhman
Assignee (at issue)
Deutz-Allis 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.