Granted Patent
Utility
US 4,666,586 · App. 06/568,354
Method and arrangement of apparatus for cracking high boiling hydrocarbon and regeneration of solids used
Inventor:
Carl D. Farnsworth
Patented Case
View Patent ↗
Granted: May 19, 1987
Filed: Jan 5, 1984
Inventor
Carl D. Farnsworth
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.