Granted Patent
Utility
US 4,549,896 · App. 06/644,476
Apparatus and method for removing gaseous inclusions from molten material
Inventors:
William L. Streicher, Mark A. Propster
Patented Case
View Patent ↗
Granted: Oct 29, 1985
Filed: Aug 27, 1984
Inventors
William L. Streicher
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.