Granted Patent
Utility
US 4,512,931 · App. 06/535,625
Insecticidal product and preparation thereof
Inventor:
Michael J. Robson
Patented Case
View Patent ↗
Granted: Apr 23, 1985
Filed: Sep 26, 1983
Inventor
Michael J. Robson
Assignee (at issue)
IMPERIAL CHEMICAL INDUSTRIES LIMITED
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.