Granted Patent
Utility
US 4,317,913 · App. 06/181,806
Herbicidal pyridine compounds
Inventor:
David Cartwright
Patented Case
View Patent ↗
Granted: Mar 2, 1982
Filed: Aug 27, 1980
Inventor
David Cartwright
Assignee (at issue)
IMPERIAL CHEMICAL INDUSTRIES LIMITED
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.