MORRIS, District Judge.
In this infringement suit of S. S. Hepworth Company and Edith M. Horstman against Penick & Ford, Limited, Incorporated, in which Cresson-Morris Company, the manufacturer of much of the alleged infringing device, intervened, infringement is actually or in effect conceded, if the patent sued upon — reissue 15,115, to Mackintosh — is valid. The defense of invalidity rests upon the subordinate contentions of inoperative structure...
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