GARRETT, Associate Judge.
This appeal is from a decision of the Board of Appeals of the United States Patent Office, affirming the decision of the examiner, rejecting the claims of appellant's application for a patent upon alleged new and useful improvements in electric furnaces. There are three claims, of which No. 7 is representative: "7. A tilting electric metallurgical furnace having an arcing electrode and a hearth or bottom comprising a metallic shell, a supporting...
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