Granted Patent
Utility
US 4,790,437 · App. 06/675,109
Thermoplastic bag, bag pack and method of making the same
Inventor:
Timothy W. Pistner
Patented Case
View Patent ↗
Granted: Dec 13, 1988
Filed: Nov 26, 1984
Inventor
Timothy W. Pistner
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.