Granted Patent
Utility
US 4,846,880 · App. 06/941,669
2-(Dichloroacetyl)-3-substituted-1,2,3,4-tetrahydroisoquinolines as herbicide antidotes
Inventors:
Gerhard H. Alt, Harrison R. Hakes
Patented Case
View Patent ↗
Granted: Jul 11, 1989
Filed: Dec 15, 1986
Inventors
Gerhard H. Alt
Harrison R. Hakes
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.