GILBERT, Circuit Judge.
This is a case in which both the plaintiff and the defendant appeal from the decree of the court below. The plaintiff sued the defendant for infringement of letters patent No. 1,010,020, issued November 28, 1911, to Mitchell-Tappen Company as assignee of Barton H. Coffey, for improvements in "devices for cooling liquids." The patent relates to an art which is old, and as to which numerous prior devices had been invented and patented for cooling...
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