Granted Patent
Utility
US 4,930,658 · App. 07/307,441
Easy open can end and method of manufacture thereof
Inventor:
Carl McEldowney
Patented Case
View Patent ↗
Granted: Jun 5, 1990
Filed: Feb 7, 1989
Inventor
Carl McEldowney
Assignee (at issue)
The Stolle 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.