Granted Patent
Utility
US 4,717,034 · App. 06/395,397
One-piece thermoplastic closure having press-on screw off structure including spaced vertical ribs in the skirt of the closure
Inventor:
George V. Mumford
Patented Case
View Patent ↗
Granted: Jan 5, 1988
Filed: Jul 6, 1982
Inventor
George V. Mumford
Assignee (at issue)
Owens-Illinois Closure 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.