Granted Patent
Utility
US 4,618,358 · App. 06/651,968
Herbicidal N-2-(nitro-5-phenoxy-phenyl)-aminoalkylphosphonic acid and esters
Inventor:
Ludwig Maier
Patented Case
View Patent ↗
Granted: Oct 21, 1986
Filed: Sep 19, 1984
Inventor
Ludwig Maier
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.