Granted Patent
Utility
US 4,359,952 · App. 06/261,428
Planter quick attachable granular chemical hopper assembly
Inventors:
Augustyn M. Gesior, Edward L. Robinson, Jr.
Patented Case
View Patent ↗
Granted: Nov 23, 1982
Filed: May 7, 1981
Inventors
Augustyn M. Gesior
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.