Granted Patent
Utility
US 5,518,427 · App. 08/405,923
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Inventors:
Meng Kuang Kan, Nam Fong Chew
Patented Case
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Granted: May 21, 1996
Filed: Mar 16, 1995
Inventors
Meng Kuang Kan
Nam Fong Chew
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.