Granted Patent
Utility
US 4,306,882 · App. 06/237,225
Carbon slurry fuels
Inventor:
Richard S. Stearns
Patented Case
View Patent ↗
Granted: Dec 22, 1981
Filed: Feb 23, 1981
Inventor
Richard S. Stearns
Assignee (at issue)
SUNTEC CO., LTD.
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.