Granted Patent
Utility
US 4,636,140 · App. 06/719,409
Method of loading and unloading a furnace
Inventors:
Robert Aldridge, Russell Elloway, William O. Fritz, Ralph D. Goff, Michael J. Herrera
Patented Case
View Patent ↗
Granted: Jan 13, 1987
Filed: Apr 3, 1985
Inventors
Robert Aldridge
Russell Elloway
William O. Fritz
Ralph D. Goff
Michael J. Herrera
Assignee (at issue)
Thermco Systems, Inc.
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.