Granted Patent
Utility
US 4,818,534 · App. 07/032,532
Insecticidal delivery compositions and methods for controlling a population of insects in an aquatic environment
Inventor:
Richard Levy
Patented Case
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Granted: Apr 4, 1989
Filed: Apr 1, 1987
Inventor
Richard Levy
Assignee (at issue)
Lee County Mosquito Control District
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.