Granted Patent
Utility
US 4,909,434 · App. 07/196,418
Moisture impervious carton having one-piece pouring spout sealed to innermost and outermost surfaces
Inventors:
Donald E. Jones, Michael T. Brown
Patented Case
View Patent ↗
Granted: Mar 20, 1990
Filed: May 20, 1988
Inventors
Donald E. Jones
Michael T. Brown
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.