Granted Patent
Utility
US 4,804,513 · App. 07/153,115
Method for producing a rolled tab for a roll of plastic film
Inventor:
Terry B. Smith
Patented Case
View Patent ↗
Granted: Feb 14, 1989
Filed: Feb 8, 1988
Inventor
Terry B. Smith
Assignee (at issue)
THE DOW CHEMICAL COMPANY
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.