Granted Patent
Utility
US 5,125,886 · App. 07/451,495
One piece pouring spout sealed to innermost and outermost surfaces of moisture impervious carton
Inventor:
William P. Dirksing
Patented Case
View Patent ↗
Granted: Jun 30, 1992
Filed: Dec 15, 1989
Inventor
William P. Dirksing
Assignee (at issue)
The Procter & Gamble Company
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.