Granted Patent
Utility
US 6,228,785 · App. 09/223,578
Roofing material having improved impact resistance
Inventors:
David G. Miller, Carla A. Miller
Patented Case
View Patent ↗
Granted: May 8, 2001
Filed: Dec 30, 1998
Inventors
David G. Miller
Carla A. Miller
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.