BUFFINGTON, Circuit Judge.
This case concerns the use of alumino-thermic metal for welding. The workable method of commercially producing that remarkable product was disclosed in patent No. 578,868, granted March 16, 1897, to Hans Goldschmidt.
The present plaintiff became the owner of that patent, brought suit upon it, and its validity was sustained by this court in Goldschmidt Thermit Co. v. Primos Chemical Co., 292 F. 362, wherein will be found this court...
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