Granted Patent
Utility
US 4,570,788 · App. 06/575,766
Packing container with fold-out pouring spout
Inventor:
Ulf Lindsjo
Patented Case
View Patent ↗
Granted: Feb 18, 1986
Filed: Feb 1, 1984
Inventor
Ulf Lindsjo
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.