Granted Patent
Utility
US 4,270,946 · App. 06/080,971
N-Aryl,2-phenoxy nicotinamide compounds and the herbicidal use thereof
Inventor:
Arnold D. Gutman
Patented Case
View Patent ↗
Granted: Jun 2, 1981
Filed: Oct 1, 1979
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.