Granted Patent
Utility
US 4,514,534 · App. 06/599,880
Modified polypropylene for film
Inventor:
Victor M. DiNardo
Patented Case
View Patent ↗
Granted: Apr 30, 1985
Filed: Apr 13, 1984
Inventor
Victor M. DiNardo
Assignee (at issue)
United States Steel 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.