Granted Patent
Utility
US 6,626,206 · App. 09/496,022
Feedblock for adjusting the dimensions of a set of co-extruded layers of a multi-layer sheet
Inventors:
John A. Ulcei, Dale P. Pitsch
Patented Case
View Patent ↗
Granted: Sep 30, 2003
Filed: Jan 20, 2000
Inventors
John A. Ulcei
Dale P. Pitsch
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.