Granted Patent
Utility
US 4,647,578 · App. 06/584,833
Phototoxic insecticidal compositions and method of use thereof
Inventors:
Nathan N. Crounse, James R. Heitz
Patented Case
View Patent ↗
Granted: Mar 3, 1987
Filed: Feb 29, 1984
Inventors
Nathan N. Crounse
James R. Heitz
Assignee (at issue)
Sterling Drug, Inc.
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.