Granted Patent
Utility
US 4,802,425 · App. 06/450,401
High temperature fiber system with controlled shrinkage and stress resistance
Inventor:
Edwin J. Dickson
Patented Case
View Patent ↗
Granted: Feb 7, 1989
Filed: Dec 16, 1982
Inventor
Edwin J. Dickson
Assignee (at issue)
The Babcock & Wilcox Company
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.