Granted Patent
Utility
US 4,356,780 · App. 06/153,975
Equalized furrow forming apparatus for a seed planter
Inventor:
Jack Bauman
Patented Case
View Patent ↗
Granted: Nov 2, 1982
Filed: May 28, 1980
Inventor
Jack Bauman
Assignee (at issue)
International Harvester 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.