Granted Patent
Utility
US 4,330,499 · App. 06/205,322
Process and apparatus for the simultaneous biaxial stretching of a plastic film
Inventors:
Friedrich F. von und zu Aufsess, Gunter Huxhorn, Hans-Jaochim Pohl, Wolfgang H. F. Sasse
Patented Case
View Patent ↗
Granted: May 18, 1982
Filed: Jun 10, 1980
Inventors
Friedrich F. von und zu Aufsess
Gunter Huxhorn
Hans-Jaochim Pohl
Wolfgang H. F. Sasse
Assignee (at issue)
Internationale Otrool Maatschappij Octropa B.V.
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.