NIELDS, District Judge.
This is a patent suit by The Cincinnati Traction Building Company, of Ohio, against Pullman-Standard Car Manufacturing Company, of Delaware, for infringement of three United States patents owned by plaintiff. All of the patents relate to improvements in the construction of articulated railroad or traction cars. The defenses are invalidity and noninfringement.
The three patents in suit are Elliott, No. 1,499,510 issued July 1, 1924;...
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