SPARKS, Circuit Judge.
Appellant charged appellee with infringement of United States Patents to Gail, Nos. 1,677,232 and 1,915,659, which had been assigned to appellant. The former patent was issued July 17, 1928, on an application filed October 3, 1927, and the latter was issued June 27, 1933, on an application filed February 15, 1930. The defenses were invalidity and non-infringement. The District Court held that the first patent was valid but not infringed. It...
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