Granted Patent
Utility
US 5,137,539 · App. 07/541,560
Method for producing dried particulate coal fuel and electricity from a low rank particulate coal
Inventor:
Chester M. Bowling
Patented Case
View Patent ↗
Granted: Aug 11, 1992
Filed: Jun 21, 1990
Inventor
Chester M. Bowling
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.