Granted Patent
Utility
US 4,737,192 · App. 06/660,190
Refractory binder, method for making same, and product produced thereby
Inventor:
William H. Smith
Patented Case
View Patent ↗
Granted: Apr 12, 1988
Filed: Oct 12, 1984
Inventor
William H. Smith
Assignee (at issue)
Manville Service Corporation
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.