Granted Patent
Utility
US 4,419,159 · App. 06/433,614
Manufacture of plastic bags with interlocking profile extrusions
Inventor:
F. John Herrington
Patented Case
View Patent ↗
Granted: Dec 6, 1983
Filed: Oct 12, 1982
Inventor
F. John Herrington
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.