Granted Patent
Utility
US 4,398,478 · App. 06/270,202
Seed planter apparatus with covering wheel
Inventors:
Roland J. Frase, Edward L. Robinson, Jr.
Patented Case
View Patent ↗
Granted: Aug 16, 1983
Filed: Jun 3, 1981
Inventors
Roland J. Frase
Edward L. Robinson, Jr.
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.