Granted Patent
Utility
US 6,524,682 · App. 09/703,567
Glass backdust for roof covering
Inventor:
Daniel N. Leavell
Patented Case
View Patent ↗
Granted: Feb 25, 2003
Filed: Nov 1, 2000
Inventor
Daniel N. Leavell
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.