Granted Patent
Utility
US 5,875,918 · App. 08/800,997
Hermetically-sealed container and closure construction
Inventors:
Robert J. Sheffler, Charles Chang
Patented Case
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Granted: Mar 2, 1999
Filed: Feb 20, 1997
Inventors
Robert J. Sheffler
Charles Chang
Assignee (at issue)
Charles Chang
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.