Granted Patent
Utility
US 4,258,540 · App. 06/041,212
Agricultural baler
Inventor:
James A. Munro
Patented Case
View Patent ↗
Granted: Mar 31, 1981
Filed: May 21, 1979
Inventor
James A. Munro
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.