Granted Patent
Utility
US 4,900,290 · App. 07/236,029
Crop delivery system for an axial-flow combine
Inventor:
Dale R. Tanis
Patented Case
View Patent ↗
Granted: Feb 13, 1990
Filed: Aug 24, 1988
Inventor
Dale R. Tanis
Assignee (at issue)
J. I. Case Company
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.