Granted Patent
Utility
US 4,885,352 · App. 07/161,588
Transparent plastic film comprising low density polyethylene
Inventor:
Laurence R. Erickson
Patented Case
View Patent ↗
Granted: Dec 5, 1989
Filed: Feb 29, 1988
Inventor
Laurence R. Erickson
Assignee (at issue)
Dow Brands Inc.
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.