Granted Patent
Utility
US 6,709,573 · App. 10/194,993
Process for the recovery of hydrocarbon fractions from hydrocarbonaceous solids
Inventor:
Anthon Smith
Patented Case
View Patent ↗
Granted: Mar 23, 2004
Filed: Jul 12, 2002
Inventor
Anthon Smith
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.