Granted Patent
Utility
US 4,341,561 · App. 06/256,415
Foamed insulating refractory
Inventors:
James M. Britt, Charles C. Logue
Patented Case
View Patent ↗
Granted: Jul 27, 1982
Filed: Apr 22, 1981
Inventors
James M. Britt
Charles C. Logue
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.