Granted Patent
Utility
US 5,424,333 · App. 07/725,925
Anthelmintic N'-substituted-N,N'-disubstitutedhydrazines
Inventor:
Keith Wing
Patented Case
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Granted: Jun 13, 1995
Filed: Jul 5, 1991
Inventor
Keith Wing
Assignee (at issue)
Rohm and Haas 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.