Granted Patent
Utility
US 4,501,779 · App. 06/308,950
Heat resistant heat shrinkable film
Inventors:
Joseph C. Hsu, Donald W. Vought, George H. Walbrun
Patented Case
View Patent ↗
Granted: Feb 26, 1985
Filed: Oct 5, 1981
Inventors
Joseph C. Hsu
Donald W. Vought
George H. Walbrun
Assignee (at issue)
American Can Company
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.