STONE, Circuit Judge.
This is an action for infringement of letters patent No. 1,620,116, granted D. A. Maanum, March 8, 1927, and covering a mechanism to wash milk cans. The defenses were invalidity of the patent and noninfringement. The issue of invalidity in the court below involved prior use and also anticipation by prior patents. The trial court found prior use and noninfringement without indicating any view as to the issue of anticipation by earlier patents...
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