HAYS, Circuit Judge:
Plaintiff brought this action in the United States District Court for the Southern District of New York, accusing defendant of infringing United States Patent No. 2,827,913, issued in 1958 to plaintiff's president, William Wagner. The district court found that the patent had been assigned by Wagner to plaintiff, and held that the patent was valid, and that it was infringed. We reverse on the ground that the patent is invalid because "the subject...
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