Granted Patent
Utility
US 4,917,721 · App. 07/010,927
Herbicidal esters, compositions and use
Inventors:
Georg Pissiotas, Hans Moser, Beat Bohner
Patented Case
View Patent ↗
Granted: Apr 17, 1990
Filed: Feb 5, 1987
Inventors
Georg Pissiotas
Hans Moser
Beat Bohner
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.