Granted Patent
Utility
US 4,351,461 · App. 06/213,470
Method and an arrangement for the feed of a material web
Inventor:
Lars Carlsson
Patented Case
View Patent ↗
Granted: Sep 28, 1982
Filed: Dec 5, 1980
Inventor
Lars Carlsson
Assignee (at issue)
Tetra Pak International AB
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.