Granted Patent
Utility
US 4,491,473 · App. 06/553,100
Method of operating metallic scrap treating furnace to fragment and segregate metallic components therein
Inventors:
Kenneth A. Bowman, Chester L. Zuber
Patented Case
View Patent ↗
Granted: Jan 1, 1985
Filed: Nov 18, 1983
Inventors
Kenneth A. Bowman
Chester L. Zuber
Assignee (at issue)
Aluminum Company of America
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.