Granted Patent
Utility
US 4,886,536 · App. 07/257,378
Method of using evenly distributed air flow to condition glass filaments prior to application of sizing
Inventor:
David Lewin
Patented Case
View Patent ↗
Granted: Dec 12, 1989
Filed: Oct 13, 1988
Inventor
David Lewin
Assignee (at issue)
Owens-Corning Fiberglas Corp.
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.