SPARKS, Circuit Judge.
Appellants charged appellees with infringement of United States patent No. 2,178,512 to Schreyer. The patent was issued October 31, 1939, on an application filed October 3, 1938. Steam-O-Matic Corporation has the exclusive license to make, use and sell throughout the United States the alleged improvements described in the patent. The individual defendants, Holger Thielgaard, Ted Thielgaard and R. C. Masters, respectively President, Vice-President...
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