Granted Patent
Utility
US 4,240,833 · App. 06/102,606
Shrink-resistant refractory fiber and process for making same
Inventor:
Thomas A. Myles
Patented Case
View Patent ↗
Granted: Dec 23, 1980
Filed: Dec 12, 1979
Inventor
Thomas A. Myles
Assignee (at issue)
Carborundum 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.