Granted Patent
Utility
US 4,889,517 · App. 07/348,344
Overlapping rasp bar rotor for axial flow combines
Inventors:
Russell W. Strong, Eric P. J. Van Quekelberghe
Patented Case
View Patent ↗
Granted: Dec 26, 1989
Filed: May 5, 1989
Inventors
Russell W. Strong
Eric P. J. Van Quekelberghe
Assignee (at issue)
Ford New Holland, Inc.
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.