Granted Patent
Utility
US 4,620,184 · App. 06/702,734
Sensing arrangement on a material roll
Inventor:
Ulf Nedstedt
Patented Case
View Patent ↗
Granted: Oct 28, 1986
Filed: Feb 19, 1985
Inventor
Ulf Nedstedt
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.