Granted Patent
Utility
US 4,936,902 · App. 07/343,541
Selective control of sicklepod in the presence of leguminous crops
Inventor:
Frank Robert Walls, JR.
Patented Case
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Granted: Jun 26, 1990
Filed: Apr 25, 1989
Inventor
Frank Robert Walls, JR.
Assignee (at issue)
American Cyanamid 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.