Granted Patent
Utility
US 4,252,485 · App. 06/031,288
Glass batch agglomerate flow diverter for forming beds of uniform height
Inventor:
Mark A. Propster
Patented Case
View Patent ↗
Granted: Feb 24, 1981
Filed: Apr 19, 1979
Inventor
Mark A. Propster
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.