Granted Patent
Utility
US 6,596,213 · App. 09/828,254
Method of molding multi-layer polymer plastic articles with control of relative shifting of the core layer
Inventor:
Paul M. Swenson
Patented Case
View Patent ↗
Granted: Jul 22, 2003
Filed: Apr 6, 2001
Inventor
Paul M. Swenson
Assignee (at issue)
Kortec, 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.