Granted Patent
Utility
US 4,478,039 · App. 06/501,591
Utilization of coal in a combined cycle powerplant
Inventor:
John J. Horgan
Patented Case
View Patent ↗
Granted: Oct 23, 1984
Filed: Jun 6, 1983
Inventor
John J. Horgan
Assignee (at issue)
UNITED TECHNOLOGIES CORPORATION
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.