Granted Patent
Utility
US 4,425,271 · App. 06/219,278
2,6-Dichlorophenyl-substituted phenyl-nitroa-zones and their use as herbicides
Inventor:
Arnold D. Gutman
Patented Case
View Patent ↗
Granted: Jan 10, 1984
Filed: Dec 22, 1980
Inventor
Arnold D. Gutman
Assignee (at issue)
Stauffer Chemical 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.