Granted Patent
Utility
US 5,458,841 · App. 08/238,014
Method for making prestretched film
Inventor:
Jack N. Shirrell
Patented Case
View Patent ↗
Granted: Oct 17, 1995
Filed: May 3, 1994
Inventor
Jack N. Shirrell
Assignee (at issue)
ILLINOIS TOOL WORKS 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.