Granted Patent
Utility
US 4,694,889 · App. 06/723,508
Cooling of materials
Inventors:
Gene D. Spenceley, Steven J. Henderson
Patented Case
View Patent ↗
Granted: Sep 22, 1987
Filed: Apr 15, 1985
Inventors
Gene D. Spenceley
Steven J. Henderson
Assignee (at issue)
British Steel 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.