Granted Patent
Utility
US 4,849,281 · App. 07/189,075
Glass mat comprising textile and wool fibers
Inventors:
Ralph E. Brandon, Ben J. Yau, Gregory S. Helwig
Patented Case
View Patent ↗
Granted: Jul 18, 1989
Filed: May 2, 1988
Inventors
Ralph E. Brandon
Ben J. Yau
Gregory S. Helwig
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.