Granted Patent
Utility
US 4,911,751 · App. 06/908,911
Process for selectively controlling weeds in crops of useful plants
Inventors:
Andreas Nyffeler, Reinhold Stauss
Patented Case
View Patent ↗
Granted: Mar 27, 1990
Filed: Sep 18, 1986
Inventors
Andreas Nyffeler
Reinhold Stauss
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.