Granted Patent
Utility
US 6,168,750 · App. 09/222,721
System and method for preforming an extruded parison
Inventors:
Jules-Joseph Van Schaftingen, Serge Dupont
Patented Case
View Patent ↗
Granted: Jan 2, 2001
Filed: Dec 29, 1998
Inventors
Jules-Joseph Van Schaftingen
Serge Dupont
Assignee (at issue)
Solvay SA
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.