Granted Patent
Utility
US 4,938,425 · App. 07/075,458
Hinged feed roll housing
Inventors:
Terry A. Williams, Raymond S. Wilkes
Patented Case
View Patent ↗
Granted: Jul 3, 1990
Filed: Jul 20, 1987
Inventors
Terry A. Williams
Raymond S. Wilkes
Assignee (at issue)
DEERE & 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.