Granted Patent
Utility
US 5,207,812 · App. 07/880,810
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Inventors:
Gregory S. Tronto, Raymond M. Wnenchak
Patented Case
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Granted: May 4, 1993
Filed: May 8, 1992
Inventors
Gregory S. Tronto
Raymond M. Wnenchak
Assignee (at issue)
W. L. Gore & Associates, 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.