Granted Patent
Utility
US 4,890,758 · App. 07/239,689
Closure with improved pull tab
Inventor:
Walter J. Gailus
Patented Case
View Patent ↗
Granted: Jan 2, 1990
Filed: Sep 2, 1988
Inventor
Walter J. Gailus
Assignee (at issue)
Continental Can Company, 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.