Granted Patent
Utility
US 4,416,686 · App. 06/112,049
3,4-Dichlorophenylacetonitrile-N-tert.butylcarbamoyloxy ether for the protection of crops against injury by herbicides
Inventor:
Henry Martin
Patented Case
View Patent ↗
Granted: Nov 22, 1983
Filed: Jan 14, 1980
Inventor
Henry Martin
Assignee (at issue)
Ciba-Geigy
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.