Granted Patent
Utility
US 5,156,266 · App. 07/491,051
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Inventor:
John M. Sykora
Patented Case
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Granted: Oct 20, 1992
Filed: Mar 9, 1990
Inventor
John M. Sykora
Assignee (at issue)
Field Container Company, LP.
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.