Granted Patent
Utility
US 4,885,248 · App. 07/012,739
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Inventor:
Paul G. Ahlquist
Patented Case
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Granted: Dec 5, 1989
Filed: Mar 9, 1987
Inventor
Paul G. Ahlquist
Assignee (at issue)
Lubrizol Genetics, 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.