Granted Patent
Utility
US 4,613,988 · App. 06/584,836
Thermoplastic bag and method of forming the same
Inventor:
Robert T. Maddock
Patented Case
View Patent ↗
Granted: Sep 23, 1986
Filed: Feb 29, 1984
Inventor
Robert T. Maddock
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.