Granted Patent
Utility
US 4,738,709 · App. 06/800,947
Herbicidally active substituted benzisoxazoles
Inventor:
Donald R. Nielsen
Patented Case
View Patent ↗
Granted: Apr 19, 1988
Filed: Nov 26, 1985
Inventor
Donald R. Nielsen
Assignee (at issue)
PPG Industries, Inc.
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.