Granted Patent
Utility
US 4,530,166 · App. 06/584,028
Preheating particulate material
Inventor:
David M. Miller
Patented Case
View Patent ↗
Granted: Jul 23, 1985
Filed: Feb 27, 1984
Inventor
David M. Miller
Assignee (at issue)
Owens-Corning Fiberglas Corp.
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.