Granted Patent
Utility
US 4,747,253 · App. 07/039,764
Method and an apparatus for the proportioning of the contents during the manufacture of packing containers
Inventor:
Diethard Schulte
Patented Case
View Patent ↗
Granted: May 31, 1988
Filed: Apr 17, 1987
Inventor
Diethard Schulte
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.