Granted Patent
Utility
US 4,696,529 · App. 06/830,841
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Inventors:
Laurentius M. Verhoeven, Cornelis G. J. van Nes
Patented Case
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Granted: Sep 29, 1987
Filed: Feb 19, 1986
Inventors
Laurentius M. Verhoeven
Cornelis G. J. van Nes
Assignee (at issue)
E.I. DU PONT DE NEMOURS AND 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.