Granted Patent
Utility
US 4,536,362 · App. 06/539,600
Method for producing longitudinally ribbed plastic film
Inventor:
Jack J. Donaldson
Patented Case
View Patent ↗
Granted: Aug 20, 1985
Filed: Oct 6, 1983
Inventor
Jack J. Donaldson
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.