Granted Patent
Utility
US 4,401,004 · App. 06/230,045
Arrangement to reduce the thickness of a moving material web
Inventors:
Jan-Erik Glans, Arvid Martensson
Patented Case
View Patent ↗
Granted: Aug 30, 1983
Filed: Jan 29, 1981
Inventors
Jan-Erik Glans
Arvid Martensson
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.