LINDLEY, District Judge.
Appellant brought suit upon three patents to Harold A. Clark, Nos. 1,807,567, claims 1 to 10; 1,807,569, claims 1 and 2; 1,819,871, claims 3 and 4. The District Court found that the first-mentioned patent is invalid for lack of invention; that one Roed was the first inventor; and that the patent if valid is infringed. The court found the last two mentioned patents invalid for lack of invention, but, if valid, infringed by certain of defendant...
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