BARNES, Circuit Judge.
Appellant, assignee of a patent for plastic battery hold-down frames, brought this action in the court below for patent infringement and unfair competition. Appellee Cox Air Gauge System, Incorporated, a distributor of the accused frames, brought a counterclaim for declaratory judgment as to the validity of the suit patent. The district court found no infringement or unfair competition, and further found the suit patent invalid. The district...
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