Granted Patent
Utility
US 4,239,688 · App. 05/935,354
Herbicidal N-(haloacetyl)-N-(N'-methylenepyrrolidonyl-2-mercaptoalkylanilines
Inventors:
Louis Schneider, David E. Graham
Patented Case
View Patent ↗
Granted: Dec 16, 1980
Filed: Aug 21, 1978
Inventors
Louis Schneider
David E. Graham
Assignee (at issue)
GAF 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.