Granted Patent
Utility
US 5,984,850 · App. 09/034,749
Gusseted bulk bag liner and method of manufacture
Inventor:
Norman C. Derby
Patented Case
View Patent ↗
Granted: Nov 16, 1999
Filed: Mar 4, 1998
Inventor
Norman C. Derby
Assignee (at issue)
Super Sack Mfg. Corp.
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.