Granted Patent
Utility
US 4,288,971 · App. 06/136,668
Round baler
Inventor:
John R. McClure
Patented Case
View Patent ↗
Granted: Sep 15, 1981
Filed: Apr 2, 1980
Inventor
John R. McClure
Assignee (at issue)
Sperry Corp.
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.