Granted Patent
Utility
US 5,789,329 · App. 08/793,562
Boron-free glass fibers
Inventors:
Walter L. Eastes, Douglas A. Hofmann, John W. Wingert
Patented Case
View Patent ↗
Granted: Aug 4, 1998
Filed: Feb 18, 1997
Inventors
Walter L. Eastes
Douglas A. Hofmann
John W. Wingert
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.