Granted Patent
Utility
US 5,958,531 · App. 08/978,222
Peelable and heat sealable lidstock material for steel end containers
Inventor:
James A. Stevenson
Patented Case
View Patent ↗
Granted: Sep 28, 1999
Filed: Nov 25, 1997
Inventor
James A. Stevenson
Assignee (at issue)
Aluminum Company of America
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.