Granted Patent
Utility
US 4,160,053 · App. 05/852,407
Blocked film laminate of low density polyethylene
Inventor:
William J. Clayton
Patented Case
View Patent ↗
Granted: Jul 3, 1979
Filed: Nov 17, 1977
Inventor
William J. Clayton
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.