Granted Patent
Utility
US 6,409,384 · App. 09/636,195
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Inventors:
Alexander R. Provan, Thomas L. Coomber, Toby R. Thomas
Patented Case
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Granted: Jun 25, 2002
Filed: Aug 10, 2000
Inventors
Alexander R. Provan
Thomas L. Coomber
Toby R. Thomas
Assignee (at issue)
PACTIV LLC
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.