Granted Patent
Utility
US 4,684,068 · App. 06/819,628
Dual rotating spreaders for harvester discharge
Inventor:
Garry W. Busboom
Patented Case
View Patent ↗
Granted: Aug 4, 1987
Filed: Jan 17, 1986
Inventor
Garry W. Busboom
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.