Granted Patent
Utility
US 5,257,959 · App. 07/871,306
Door assembly for an axial-flow combine
Inventor:
Dale R. Tanis
Patented Case
View Patent ↗
Granted: Nov 2, 1993
Filed: Apr 20, 1992
Inventor
Dale R. Tanis
Assignee (at issue)
Case GmbH
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.