Granted Patent
Utility
US 4,387,560 · App. 06/220,541
Utilization of coal in a combined cycle powerplant
Inventors:
Stuart Hamilton, John J. Horgan
Patented Case
View Patent ↗
Granted: Jun 14, 1983
Filed: Dec 29, 1980
Inventors
Stuart Hamilton
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.