ALLEN, Circuit Judge.
These are appeals arising out of separate litigation instituted by the appellee involving two patents, Nos. 1,536,044, and 1,636,721, issued to John W. Swan, the dates of issue being September 28, 1925, and July 26, 1927, respectively, each patent relating to improvements in manifolds for use in internal combustion engines. The original application, upon which the second patent issued, was filed September 17, 1921. The first patent was issued...
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