Granted Patent
Utility
US 4,292,064 · App. 06/135,950
Glass batch feeding using a fluidized bed for predrying agglomerates
Inventor:
Mark A. Propster
Patented Case
View Patent ↗
Granted: Sep 29, 1981
Filed: Mar 31, 1980
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.