Granted Patent
Utility
US 4,741,769 · App. 06/872,071
Certain 1-phenyl-3-alkyl-1,3-propanediones
Inventor:
David L. Lee
Patented Case
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Granted: May 3, 1988
Filed: Jun 9, 1986
Inventor
David L. Lee
Assignee (at issue)
Stauffer Chemical Company
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.