Granted Patent
Utility
US 4,571,235 · App. 06/746,924
Methods for preparing flat-bottom thermoplastic sack and systems therefore
Inventor:
Gordon L. Benoit
Patented Case
View Patent ↗
Granted: Feb 18, 1986
Filed: Jun 19, 1985
Inventor
Gordon L. Benoit
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.