SIMONS, Chief Judge.
In this patent action, injunction and damages were sought for infringement of Keeler patent No. 2,197,395, and a declaratory judgment that Greiner patents Nos. 2,359.519 and 2,442,563, owned by the appellant, are invalid. The appellant denying validity and infringement of Keeler, counterclaimed for infringement by the appellee of both Greiner patents and the Harrison and Greiner Design patent No. 138,539. The appellant at trial conceded the invalidity...
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