Granted Patent
Utility
US 4,780,128 · App. 06/901,998
Herbicides
Inventor:
David Cartwright
Patented Case
View Patent ↗
Granted: Oct 25, 1988
Filed: Aug 28, 1986
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.