Granted Patent
Utility
US 4,744,481 · App. 07/046,394
Closure for containers
Inventor:
Robert Morgan
Patented Case
View Patent ↗
Granted: May 17, 1988
Filed: Apr 6, 1987
Inventor
Robert Morgan
Assignee (at issue)
Poly-Seal Corporation
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.