Granted Patent
Utility
US 5,019,153 · App. 07/444,587
Substituted pyridine herbicides
Inventors:
Len F. Lee, Mark G. Dolson
Patented Case
View Patent ↗
Granted: May 28, 1991
Filed: Dec 1, 1989
Inventors
Len F. Lee
Mark G. Dolson
Assignee (at issue)
Monsanto 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.