Granted Patent
Utility
US 5,230,689 · App. 07/930,358
Method of making stabilized flexible container for flowable materials
Inventor:
Norwin C. Derby
Patented Case
View Patent ↗
Granted: Jul 27, 1993
Filed: Aug 17, 1992
Inventor
Norwin C. Derby
Assignee (at issue)
B.A.G. 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.