Granted Patent
Utility
US 4,532,256 · App. 06/560,655
Pesticidal N-methyl-carbamic acid esters
Inventor:
Jozef Drabek
Patented Case
View Patent ↗
Granted: Jul 30, 1985
Filed: Dec 12, 1983
Inventor
Jozef Drabek
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.