Granted Patent
Utility
US 6,367,221 · App. 09/652,202
Self-aligning shingles
Inventor:
Bert W. Elliott
Patented Case
View Patent ↗
Granted: Apr 9, 2002
Filed: Aug 31, 2000
Inventor
Bert W. Elliott
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.