Granted Patent
Utility
US 6,183,826 · App. 07/898,373
Colored cellulosic casing with clear corridor
Inventors:
Xavier Jose Quinones, Jeffrey Brian Sherry, James R. Hansen
Patented Case
View Patent ↗
Granted: Feb 6, 2001
Filed: Jun 9, 1992
Inventors
Xavier Jose Quinones
Jeffrey Brian Sherry
James R. Hansen
Assignee (at issue)
Viskase Companies, 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.