Granted Patent
Utility
US 6,663,375 · App. 09/596,639
Dual flexible lip extrusion apparatus with pivoting actuation member
Inventor:
John A. Ulcej
Patented Case
View Patent ↗
Granted: Dec 16, 2003
Filed: Jun 19, 2000
Inventor
John A. Ulcej
Assignee (at issue)
Extrusion Dies, Inc.
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.