Granted Patent
Utility
US 6,228,422 · App. 09/183,331
Shuttle cutoff for applying granules to an asphalt coated sheet
Inventors:
James F. White, Glenn D. Lamb, Carla A. Miller, Lawrence J. Grubka
Patented Case
View Patent ↗
Granted: May 8, 2001
Filed: Oct 29, 1998
Inventors
James F. White
Glenn D. Lamb
Carla A. Miller
Lawrence J. Grubka
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.