Granted Patent
Utility
US 5,620,897 · App. 08/562,469
Automated method and test kit for free fatty acids in cooking fats and oils
Inventor:
Ronald J. Zappe
Patented Case
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Granted: Apr 15, 1997
Filed: Nov 24, 1995
Inventor
Ronald J. Zappe
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.