Granted Patent
Utility
US 4,921,517 · App. 07/309,301
Method and apparatus for directing glass fiber strands for fabricating continuous strand, nonwoven mat
Inventor:
Steven A. Sholl
Patented Case
View Patent ↗
Granted: May 1, 1990
Filed: Feb 13, 1989
Inventor
Steven A. Sholl
Assignee (at issue)
Superior Glass Fibers, 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.