Granted Patent
Utility
US 4,909,834 · App. 07/290,247
1-trifluoromethylphenyl-2-phenyliminopyrrolidines and their use as herbicides
Inventor:
Frank X. Woolard
Patented Case
View Patent ↗
Granted: Mar 20, 1990
Filed: Dec 27, 1988
Inventor
Frank X. Woolard
Assignee (at issue)
ICI Americas, 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.