Granted Patent
Utility
US 6,487,828 · App. 09/607,271
Tabbed shingles length cut at mid-tab
Inventor:
John D. Phillips
Patented Case
View Patent ↗
Granted: Dec 3, 2002
Filed: Jun 30, 2000
Inventor
John D. Phillips
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.