Granted Patent
Utility
US 4,307,049 · App. 06/117,510
Method for the continuous formation of biaxially oriented thermoplastic materials and forming articles therefrom by intermittent forming means interfaced therewith
Inventor:
Thomas W. Winstead
Patented Case
View Patent ↗
Granted: Dec 22, 1981
Filed: Feb 1, 1980
Inventor
Thomas W. Winstead
Assignee (at issue)
Maryland Cup 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.