Granted Patent
Utility
US 4,342,398 · App. 06/197,467
Self-supporting plastic container for liquids
Inventor:
Long F. Chang
Patented Case
View Patent ↗
Granted: Aug 3, 1982
Filed: Oct 16, 1980
Inventor
Long F. Chang
Assignee (at issue)
Owens-Illinois 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.