Granted Patent
Utility
US 4,840,663 · App. 07/107,202
Synergistic composition and method for selective weed control in rice
Inventors:
Marco Quadranti, Wilheim Schmidli, Andreas Zoschke
Patented Case
View Patent ↗
Granted: Jun 20, 1989
Filed: Oct 13, 1987
Inventors
Marco Quadranti
Wilheim Schmidli
Andreas Zoschke
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.