CAMPBELL, District Judge.
This is an action for an injunction and damages for the alleged infringement of patent No. 1,346,028, issued to Hermann Hopp and Leo Hopp, for price marker system, dated July 6, 1920, which patent became the property of the plaintiff by assignment.
Defendants have interposed the twofold defense of invalidity and noninfringement.
Plaintiff relies upon both claims of the patent, which read as follows:
"1. A card for...
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