Granted Patent
Utility
US 6,478,181 · App. 09/729,496
Shrinkable tray with attachable lids
Inventors:
Calvin S. Krupa, Robert Knoss, Richard T. Steichen
Patented Case
View Patent ↗
Granted: Nov 12, 2002
Filed: Dec 4, 2000
Inventors
Calvin S. Krupa
Robert Knoss
Richard T. Steichen
Assignee (at issue)
Ivex Packaging Corporation
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.