FOSTER, Circuit Judge.
Appellee brought this suit against appellant to enjoin infringement of letters patent No. 2,051,550, issued August 18, 1936, to appellee, as assignee of Wm. H. Dodson, the inventor, and for an accounting. The patent was granted for an improvement in cotton gins of the pneumatic type. Appellant denied infringement and pleaded anticipation by prior patents and publications and prior use. The District Court held the patent to be valid and infringed...
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