Granted Patent
Utility
US 4,620,640 · App. 06/809,607
Lined child-resistant closure for widemouth liquid container
Inventor:
Peter T. Swartzbaugh
Patented Case
View Patent ↗
Granted: Nov 4, 1986
Filed: Dec 16, 1985
Inventor
Peter T. Swartzbaugh
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.