Granted Patent
Utility
US 4,840,610 · App. 07/243,968
Thermoplastic bag, bag pack and method of making the same
Inventor:
Timothy W. Pistner
Patented Case
View Patent ↗
Granted: Jun 20, 1989
Filed: Sep 14, 1988
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.