Granted Patent
Utility
US 6,213,752 · App. 09/471,889
Vacuum extrusion system and method
Inventor:
Robert L. Sadinski
Patented Case
View Patent ↗
Granted: Apr 10, 2001
Filed: Dec 23, 1999
Inventor
Robert L. Sadinski
Assignee (at issue)
Owens-Corning Fiberglas Technology, 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.