Granted Patent
Utility
US 4,401,436 · App. 06/333,145
Process for cooling particulate coal
Inventor:
Bernard F. Bonnecaze
Patented Case
View Patent ↗
Granted: Aug 30, 1983
Filed: Dec 21, 1981
Inventor
Bernard F. Bonnecaze
Assignee (at issue)
Atlantic Richfield 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.