HAZEL, District Judge.
This is a suit in equity for alleged infringement of the reissue patent, No. 13,991, of October 12, 1915, granted to Robert Meyer, and patent No. 1,341,145 of May 25, 1920, to the same inventor as assignor, both patents relating to plate valves which are utilized in machinery for compressed air and gases. Compressors of this type are largely used in manufacturing plants for driving machinery of various sizes; also for driving natural gas through...
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