Granted Patent
Utility
US 5,019,313 · App. 07/466,797
Method for molding containers and forming hole therein
Inventor:
Richard T. Warburton
Patented Case
View Patent ↗
Granted: May 28, 1991
Filed: Jan 18, 1990
Inventor
Richard T. Warburton
Assignee (at issue)
Mobil Oil Corporation
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.