PER CURIAM.
This is an appeal from a judgment of the District Court denying, after a trial de novo, 35 U.S.C. § 145, patentability of an electric furnace for heat treating metal products. The ground for the denial was that Dow's furnace was "merely * * * a combination of elements of well known [prior] art." The Primary Examiner and the Board of Patent Appeals had earlier come to the same conclusion. We have examined the contentions of the appellant in the light...
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