Granted Patent
Utility
US 4,673,594 · App. 06/786,923
Method for applying a layer of fiber on a surface and a refractory material produced thereby
Inventor:
William H. Smith
Patented Case
View Patent ↗
Granted: Jun 16, 1987
Filed: Oct 11, 1985
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.