Granted Patent
Utility
US 4,303,429 · App. 06/185,106
Apparatus and method for production of mineral fibers
Inventor:
Arnold J. Eisenberg
Patented Case
View Patent ↗
Granted: Dec 1, 1981
Filed: Sep 8, 1980
Inventor
Arnold J. Eisenberg
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.