Granted Patent
Utility
US 4,826,039 · App. 07/152,527
Container closure with anti-nesting ribs
Inventor:
H. Richard Landis
Patented Case
View Patent ↗
Granted: May 2, 1989
Filed: Feb 5, 1988
Inventor
H. Richard Landis
Assignee (at issue)
Landis Plastics, 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.