Granted Patent
Utility
US 4,537,616 · App. 06/509,456
Herbicidal 2,6-dioxocyclohexylidene derivatives
Inventor:
David Treadway Manning
Patented Case
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Granted: Aug 27, 1985
Filed: Jun 30, 1983
Inventor
David Treadway Manning
Assignee (at issue)
Union Carbide Corporation
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.