ALSCHULER, Circuit Judge.
The appeals involve 9 of the 53 claims of United States patent No. 1,450,032, to Gardner, March 27, 1923, application filed September 23, 1919, for improvements in two-stage air compressor mechanism used mainly in garages, filling stations, etc., to supply air for automobile tires. Wall Pump & Compressor Company (herein called defendant) appeals from so much of the decree of the District Court as holds valid and infringed claims 42, 47...
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