Granted Patent
Utility
US 5,402,888 · App. 08/252,022
Carton with self locking keel
Inventor:
Philippe Marie
Patented Case
View Patent ↗
Granted: Apr 4, 1995
Filed: Jun 1, 1994
Inventor
Philippe Marie
Assignee (at issue)
The Mead 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.