Granted Patent
Utility
US 4,793,849 · App. 07/151,732
Heat shield for refractory tube in molten glass feeder
Inventor:
Kenneth L. Bratton
Patented Case
View Patent ↗
Granted: Dec 27, 1988
Filed: Feb 3, 1988
Inventor
Kenneth L. Bratton
Assignee (at issue)
Emhart Industries, Inc.
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.